Just Called Dillon, they had me remove the primer punch. The handle was able to go another 1/2 inch.
They also say the spring should have been compressed more. Put the punch in a vise and it bottoms out way before the spring compresses much. We tried a thin metal rule between the punch and the frame piece. did not help. Seems this particular punch is not up to specs. They will check one today and send me a new one.
I had the same problem with my 650. Ended up being a slight bur on the primer plate, and a weak spring changed them out good as new! At least 60,000 rounds ran through mine. Works flawlessly!