I would pull the rear PV and plug it. Go up to 82s in the secondary and put a .31 squirtor there. Check your idle vacuum in gear. My guess is you should have a 2.5 PV in the front as that cam usually idles around 3-5" in gear with low static compression. If the carb has a 30cc acc pump in the front use the .028 squirtor in the front. If it's got .050ccs then keep the .031. That's where I'd start.