Thanks Ray. I was nice talking with you. I appreciated your help. I used a silver spring and a blue spring that I had laying around -- just to see where it put my curve -- and adjusted my mechanical timing from 18* to 16*. I'm now at 20 initial, 16 mechanical. My advance starts now at about 1100 rpm and I'm all-in at 2400 rpm. I haven't had a chance to take a drive (rain). But my timing light shows a much more consistent curve than before, when it would jump from no mechanical to all in, all at once at about 2,000 rpm. I'm sure I had an issue with my springs. Next, I'm going to try to get vacuum advance dialed in (using manifold port). I've never been able to get it to work right, but with fixed springs, maybe it will work this time. Thanks again