Thanks for the replies fellas!...I checked for the vacuum advance working and, it does, it moves when the throttle is advanced. I thought that I might change out the new condensor with another to see if it could be faulty and still have the missing stumbling under load. Accelerating fully up a slight grade I experience the stumbling as I near the shift point, usually in 3rd and 4th gear. On the road when I am cruising at 60, 62 mph, no problem. When I need to pass I may get it as I get on it like it is about to starve for fuel. If I decelerate back to cruise....no problem , it doesn't miss a beat. I did recheck the dwell and made sure things were right. I usually always use Carb cleaner and blow things out well before I reassemble... I think I did 3 times to this point. The fuel may be an issue, I will get some Berrymans and try that.I am guessing that I will start over and check AGAIN!. Thanks again for your help guys. B_H