One of the carbs on my 85 max has a screwed up air/fuel mixture tread in the carb. I measured the pitch and it is .5(really fine pitch), But I am not sure the size. I think it is 6mm. Anybody had this problem. I can only get the air fuel screw down about 2.5 turns, so I know the threads in the carb are screwed up. I pulled a screw from a different carb just to make sure it was not the screw, Same deal. Its in the carb. Anybody had this problem?:bang head: