All Small Six Vacuum advance canister

[gserafini]

I think I need a new vac advance canister. 66’ 200, California car, LOD distributor with Autolite 1100 and SCV. My vac advance isn’t working. Put the hose to it and sucked air from it, I can hear air pull through and nothing turns in distributor. Then I tried again and the plates did move in springs, but I had to use some force and could feel air pulling through too. Seems like a leak in the canister. At least my plates are moving if I get the seal right. But what part number for this vacuum advance?? A lot are for v8 engines or don’t say for the 200 i6 load o matic specifically. Thanks!