I have a '99 FI Road King with a big bore kit with flat top pistons, SE 211 cam & Samson true duals with SperTrapp slipons. I put a Power Commander module on it and can not find a map which will keep it from popping back through the intake (a lot!)when cold. It seems to run OK when the motor finally warms up. There is nothing radical about what I have done to the motor and HD did the work. I wonder if I might have a bad Power Commander. Has anyone run accross this problem??