First of all i want to thank everyone who is trying to help me, DECONE31,i didnt try a non vac carb . it sounds like a lean spot to me too. nly way to tell is dyno for that. from a dead punch shell smoke em till you let off no hessitation or pops lt1s10,at 18 to 2200 sitting still it still has the vibratin s10streeter, im thinking ballance issues to what should i look for