[A17] Experience gain

[corruptsoul]

I am making a mod that brings a the allowed crafting skill to rolling smokeleaf joints. I brought it back by adding "Crafting" to the <workSkill> in the defs, but this also makes rolling joints give crafting xp. I want to either reduce it or bring it all the way to zero. Where is experience gain handled? I have looked at a lot of different defs but I can't seem to find anything regarding xp gain. I also can't find anything in the jobs or bill parts of the C# code. Any help is appreciated.

Edit: I realize I posted this in the wrong area. Moving it.