I have a pertronix dist. and the stock advance springs don't give full advance til 3500. The next spring they have starts with 5 at 1000 and all in by 2000. I was wondering if you can combo these springs (IE. one of the stiffer and one of the looser), or will it just revert to the tighter one? I'd kind of like something in-between these two choices.

Sure - you can mix-and-match springs; that's part of developing a curve. :thumbsup:

I'll give it a shot, thanks John.