Thanks for the speedy reply, wtdash. I was looking at the plastic housing and it's actually just a small piece that can be replaced later on if I screw up monumentally. I don't think I want to mess with the PCB either. I'll take a look at the 'stop' that keeps the seat from going! Maybe I'll be able to make a homemade block so it doesn't make the seat wobbly. I dunno. I appreciate it!
Also yes, looking for a new chair actually may be ideal. If I found a seat with a thinner frame to it I think it'd solve the problem too. I'll have to look around for some junkyards!