Timing /6 without advance port of the carb working correctly??

1966 225/6. Since I have an issue with my Carter 1695 1bbl that has constant vacuum at the Advance port that should be ported. Should there be vacuum at this port at idle? Idle is between 600 to 700.
Has anyone set the timing without using the advance port on the carb and leaving it disconnected? Setting it to maybe 10 to 12 degrees BTDC at idle and letting centrifugal force do the rest? Or total advance between 32 to 38? Is this possible until I can figure out whats going on with this carb. Think I can get away with this?