Jerry - I'll check the idle with the advance port plugged (I just left it open when I pulled the line) then I'll check the vacuum at the advance port and see if it is pulling any vacuum at idle. Then I'll check with the timing light after connecting the advance.

George and Joe - thanks for the tuning tips. I'll bump it 5 degrees once I've confirmed I don't have vacuum at the advance port, then plug it and see what happens. Have not messed with the mixture or throttle lever screws yet, and will fiddle around this weekend.

Thanks!
Mark