[Edi]

Possibly. There is more than one weapon named "Decay" in the weapons list and I had to put something in. It's more or less a guess as to which Decay it is, but it is possible that it is assigned by name in the code, in which case it would use the first one that matches. That would explain things.

It can be either a DB problem due to my assumptions or a game problem depending on how the code is written.