This Carb, has four corner idle, so both front and rear has a idle screw that can be set. Im not talking about that little screw you have to take off the carb to get to, but a actual screw that can be set while running. Well it seems, I turned the rear screw down some and raised the front to compensate for the loss of RPM. Seems to have been the problem, along with re curving the Dist. Did both so hard to tell if the Dist. was a problem at all. BUT it runs real good now!!