UPDATE: I installed my new european dizzy with the custom timing curves. Advanced distributors did a remarkable job as far as I can tell. They instructions were as follows. Set static timing at idle at 14 degrees BTDC The dizzy now has 22 degrees of centrifugal advance He told me to try to run without a Vacuum Advance at first. So I Plugged it up. Funny thing. While I had both dizzys out, I hooked up my MityVac to my stock vacuum advance, and again to the european vacuum advance. They both held vacuum solidly, and they both moved, but the American VA moved about twice as much until it hit a hard stop. So I thought that both would be the same. If I decide to run a VA I am going to put the european one in as it moves far less. I got the car timed to 14 BTDC, and tightened the fast idle screw until I reached maximum advance. I reach 37 degrees at around 3100 rpm roughly, give or take 100 rpm. Car idles very smoothly and has no issues stating up with so much advance. Car seems to respond to throttle a bit better, but it is too soon to tell. It definitely pulls better above 5000 rpm. I am going to leave the VA disconnected for now, but may hook up the european one to see if things get even better.