[dpoltzer]

I replaced the vacuum advance unit and connected the ground wire to the breaker plate yet the stumble is still present. I then took the Rochester Q.jet off my 1969 T/A and put it on the 1974 and the motor runs great and with NO stumble. This confirms the stumble is being caused by the 7044262 carb which is what most here thought was the problem. I suppose I will try using the lean drop adjustment process tomorrow to see if that helps?