I just rebuilt my '85 Big Red and today received a new battery bought on fleabay. I had put off setting the idleing until now because of kick starting was no easy task with my bum foot. Installed battery, let it warm up to start setting idle, it blew the 20A fuse. I just straped it to continue my work and took it for a mile ride and came back to adjust the pilot screw. I turned it in expecting to kill the engine and it had no effect on the motor after screwing it all the way in. BTW - I did put and after-market carb kit on it before installing. I don't think I put the pilot screw in wrong. Could this be trash from somewhere causing this ?