[Dead Parrot]

Lots of threads on manifold vs timed for the vacuum advance. End results seem to be that most motors like manifold but some prefer timed. Sounds like yours might be in the timed column. Once you get everything dialed in better, might be worth a retry on the timed vs manifold ports.

If you have the vacuum operated doors for your climate system, it will need a manifold source as well. Usual place is the manifold port behind the carb.

If you are planning on using a OEM type cleaner cover, it might interfere with the fuel inlet. Mine did. Fix was switching to a banjo fuel inlet.