I am in desparate need of some experience. I took the second carb off of my recently acquired '81 R100RT to clean it and rebuild it like the first one. I took out the mixture screw only to see that some previous owner had broken off the slender tip of this screw and the piece is still stuck in the carb body. Anyone know how to get this broken piece out without screwing up the carb body? I really don't want to spring for a new carb for a tiny piece of brass. All advice will be greatly appreciated.