Well I figured my above question can wait, so I went ahead and reinstalled the carb, started the car, warmed it up and adjusted the initial timing to 20deg. But at 750rpm I was still pulling almost 15"Hg from the ported vacuum. If I dropped the RPMs to 500 then the reading on the ported vacuum would drop to almost 0, but as soon as I started increasing the RPMs, so did the vacuum...

I could increase my initial advance past 20, but I'm not sure if it'll do me any good at this point.


ON the good side, the stumbling/stuttering on acceleration is now completely gone.