There are a few possibilities for the advance curve. For what you have, you should be running one light silver, and one blue. There are also heavy silvers. You should not be running them. Also, the bushing for the mechanical should be the largest one. I think it's either blue or black but it's in the tuning book that came with the distributor. I still think the cylinder pressure is indicating a problem more than likely with the cam timing, but those settings for the ignition should get you close. If it still wont run like that (and after tuning the carb following those changes) then it's time for the shop to look at the cam timing.