I recently found out my 83 stator went bad so i replaced it with a stator from a 70's model (unknown exact year). I installed the pick up assembly on the 70's stator and installed it on the bike. I also put the 83 brushes in the 70's stator because they were still good and long. The bike ran for about 15-20 minutes and then the main 20 amp fuse blew. The brush ashembly still has the metal screws. From reading everything so far I am convinced that nylon screws would be the answer to the fuse blowing. I have gone through my wiring harness numerous times and can not find a short anywhere. Any help would be greatly appreciated due to riding season being here now.