I built a partcaster a while ago. So far so good. At higher Volumes there was a terrible squeal, i thought it's the pickup. So i put a Humbucker in it, same problem. So i read it could be the bridge plate. I bought a half bridge and tried it, problem solved. Nice sideeffect: because the humbucker is mounted direct to the body there is less harsh heights and a more "woody" tone, hard to describe. And i like the looks.