I just rebuilt all 6 carbs and added a stage 1 kit which turned out to be just a new main needle. followed all instructions and now it will only start and idle (slowly) while at full choke. I pulled the tank and made sure the vaccume petcock was working properly and now I'm stumped. Has anyone had this happen to them? Part of the stage 1 kits instructions had me set all the airflow screw out from 2 fulls turs from bottom to 2 1/2 turns out, could this be it?