Alright, so, apparently I have many questions today.
I could make them in a single thread, but I figured that separate threads for separate issues makes it easier for others to find it later.
So, Reliable vs. Overheating.
In the games I have played, we have always played weapons with Overheat as overheating on anything that would otherwise been a Jam. That's it. So if a weapon can't Jam, it can't Overheat. If it's got Reliable, it's harder to Overheat. And so on.
Upon reading what the Overheat Special Quality actually does, I came to the conclusion that that might be completely wrong. Specifically, it says that Overheat makes the weapon overheat on any roll of 91 or higher. In this, it offers no alternative. It's a flat-out stated part of the quality.
It then later goes on to explain that, apparently in addition to the above, if the weapon jams, it instead gets overheated.
This leads me to believe that a weapon with Overheat in no way benefits for effects that reduces jamming, other than of course the said jamming (if applicable) not becoming an overheat.
Meaning that any weapon with Overheat overheats at a roll of 91 or higher, even if it has Reliable, and the only safeguard against Overheating is if the weapon is of Best Craftsmanship.
Is this the correct, by-the-books interpretation?