I know my cam is at 0 degrees, I made sure they checked that. Taking it down to another shop today to see if we can figure out the problem. I might be wrong, but I don't think its the distributor since its just on number 6, but who knows. Funny thing about it is that it only does it under certain rpms. Sitting idle or acceleration is great, just that damn low rpm cruise. I drove about 30miles to get some steelie fishing in today and it bucked about 6 times. I assume that if it was major it would do it more then that?