Still hesitates off throttle...

Tried the middle hole and didn't make any difference. Went to the outermost hole and it seems to have helped a little bit, sort of. Doesn't hesitate quite as bad, but it lasts much longer. I will take off the carb and go through it again. Still runs like a champ with the vacuum advance disconnected and port plugged.

Other bits of info.. I borrowed my neighbor's old maxi-tune to more accurately measure the timing curve. Initial timing is 5 btdc at 750 rpms. Mechanical advance maxes at 28 btdc @ 1800 rpm. Total with vacuum advance is 38 btdc @ 2000 rpm. Not sure if it is relevant, but just fyi.

I will see what I can find in the carb and report back.