So I put a new carb (rebuilt, not new new) on the Packard, and after doing so the vacuum advance doesn't work. I don't know if the two are related or just coincidence... I have good vacuum in the line goin to the distributor (I don't have a gauge, but can feel it sucking with my thumb). What steps do I take to find the culprit? My distributor is a stock Delco for '53 Packard 327. I can go take any pics that might be needed.