Are you aware of the Titanomachy thread on this very forum? or are you looking for a webcam/Roll20 style group? A couple of threads have started on here asking about those, but they don't seem to have had much activity, maybe if you contact the OP's they can tell you where or if they had more success?

"Tech-Priest Harlocke, these men had a close run in with Overseer Hresh in the refinery after they got lost on their business. They could use a guide familiar with the workings of the forge and the mine complex beyond, one friendly to all and not just those of the forge. I immediately thought of you. The workers would see it as a great favor if you could accompany them, and safeguard the Legio's business."
 
The man keeps to one side, respectful of the tech-priest, and admiring of his work.
 
"If I may leave them in your capable hands? I must return to work or the Overseer will begin to question their presence once more."
 
He pauses, awaiting confirmation from the priest.
 
 
//   I'm wary of using the spoiler tags as OOC. You won't know if you're looking at a comment from me, or opening up a dice roll that maybe you wanted to be left in the dark about. I was mainly using the Spoiler for those readers who might like to know what effect your tests, and NPC tests are having on the story. Quote would be a suitable alternative if all agree.In either case, I would rather see your rolls in the open as you have done all along.

Maybe rule that Overwatch can only be used as a surprise action? As in can only be used if the player is not already (directly) involved in combat, or if someone separates from combat to set up an overwatch. 
I would also rule that it MUST be used on the first viable target to enter the kill-zone, no waiting for 1,2,3 people to enter then blasting crap out of the special weapon guy.

Either of those would be acceptable. When in doubt, make your best guess on a roll, you won't be wasting space. As long as it's justifiable I'll let it go.

The dirty brown world spun slowly below, low orbit filled with landers, cargo haulers and other spacecraft glinting in the void. One such vessel, a snub nosed mass hauler decorated with Adeptus Mechanicum livery drifted towards the night side of the planet, the forges and space ports glowing through the smog that coated the planet.
Within the craft, the cockpit was buzzing with noise and activity. The pilots flicked switches and turned knobs, pulling levers and calling over their headsets as they approached the forgeworld.
"Rhodin-command this Oberat-Lander 45656 requesting approach vector for Refinery Decima-Alpha depot." The pilot voxed, a small button on his command console lit up as his message transmitted.
"Oberat-Lander 45656, approach vector is 34.8. Maintain holding pattern Eternus at angels 59." Came the crackled reply, the machine voice of a servitor at Orbital Command directing the ship.
"Copy Command, proceeding to angels 59 at vector 34.8. We await direction. Oberat-lander 45656 out."
As the light on the console blinked out, the pilot unbuckled himself from the flight chair, disconnected his cranial plugs and patted his co-pilot on the shoulder. "I'll be right back, I need to take care of something."
His co-pilot didn't reply, but waved a hand as he moved out to the cramped passenger section and entered the code to open the bulkhead that entered the cargo hold. The cavernous expanse was empty but for a few servitors and a lone man sleeping against one wall at the moment, but soon it would be filled with goods to be brought up from the polluted planet below. The pilot jumped down the steel steps two at a time before jogging over to the sleeping man, kicking the stranger to wake him.
"Hey, we're here."
The man on the floor sat up, disheveled but alert as he stood and gathered his pack.
"You have my thanks. Here are the thrones I promised. Remember that you never saw me. I don't ever want to see you again, but if people come after me, I come after you."
The pilot snatched the bag out of the strangers hand, a glare on his face.
"You think I'd be that stupid? It's not you I'm worried about. That servitor over there was a pilot once. I don't want to end up like that."
They headed to the rear of the hold, a small portal by the side of the main loading ramp was bolted shut, but the pilot entered another code into the small cogitator next to the door and the bolts slide back and he pushed the door open, fighting the slipstream to open it. The stranger buckled another pack onto his chest, tightening the straps before nodding at the pilot and leaping into the screaming winds.
He fell through the darkness, counting seconds before yanking the rip cord hanging from his second pack and a plume of material expanded above him, arresting his descent to a float instead of free-fall. The glowing city beneath him got closer and closer before he landed atop a mostly collapsed building. Quickly gathering his parachute together, he hurried to hide it in a vent before moving on to the city.
He ghosted through the thoroughfares and alleys, his bulk putting off most who would attack him, the lasgun at his back taking care of the rest. Black hair hung limp in his eyes and he brushed it aside, mismatched lenses glinting in the dark. He looked for street markers or some kind of map, but came up empty so decided to ask.
He pushed open the door to a dive, smoke and stale alcohol smell billowed past him as a gun barrel pushed itself into his chest as he entered.
"Wat business you got 'ere boy?" a voice asked from the shadows
"Just lookin' for a drink 'n some direction. Not 'ere for no trouble." He responded, holding a hand up as he stopped moving
"Alrite then. But aye'll be watchin'." The barrel moved away and the strangers moved over to the bar and sat on a rickety stool. A dirty glass hit the bar and a mechanical arm reached out and poured a clear liquid into the glass, smoke pouring gently over the rim of glass before he picked it up and downed it. The fluid burned its way down his throat and he gasped slightly.
"Heh, nice one. Not many off-worlders can handle that." The bar keep smiled.
" Not the first thing I've drank that tastes like acid and burns like it too." He slipped a handful coins and a smalll piece of paper over the bar top. "I'm trying to get here, can you point me in the right direction?"
"It's not far, a kilometre or so east of here. I'll put a few directions on the back."
"My thanks." Stranger said "I'll take another glass for the road and be on my way."
He knocked the second shot back, the burn less intense this time but he could feel fire in his belly still. He left, nodding to the shotgun wielding old-timer sitting by the door as he left.
Almost an hour later, the stranger found himself surrounded by half a dozen juves, crude tattoos and piercings marked them, pipes and knives held lazily in confident hands as thier leader straddled a growling motorcycle, the youths hair shaved and a series of steel spikes bolted to his skull instead.
"Hehehe drop the gun old man! We'll gank you good!" Came a call from of the others, and the stranger turned his head to look each way.
Great, way to get yourself in trouble again Jaspar. he thought, unhooking the latch on his laspistol hostler discreetly.
"I'll give you one chance to frag off punks, I've killed younger than you for less." He growled.
"Ahahahahah! You dare!?! What you gonna do old man?" Laughed the juve on the bike.
Jaspar simply drew his laspistol and shot the punk in the chest, punching the kid off the bike onto the road. The jive gasped once, surprised and died on the road, his face going slack as he died in agony. The other juves seemed frozen, shocked thier leader had just been gunned down.
Jaspar simply strode over to the bike, straddled the seat and tore off on his way, leaving them in the dust as he drove off. An hour or so later, he pulled up in front of a building, non-descript and filthy just like all it's neighbours. He pulled up the bike onto its stand and climbed off. Hammering on the door, he opened it a second later and entered.
"Hello?" He called out.
[[OOC://: sorry for the long post, my regulars won't be this long, just wanted to get everything in. EDIT: also dark blue will be Jaspars speaking colour now ]]