your problem is not the type of carb!! its how its tuned. makes shure you are useing ported vacume. pull the idel screws out and blow compressed air thruogh there. put them back in all the way and then back them out to 2 1/4 turns. after that turn them in until the idle drops 100 rpms. then back up 1/2 turn on each side. if timing is correct and his is done. it will run great.
