It definitely seems to like more initial. Idle was noticeably dirtier when I backed it off to 6* initial from 10* and off-idle tip-in wasn't as crisp. I think it would actually be happy at 12* if I wanted to try to limit the curve and the max some more. 2* initial seems to be worth about 1" of idle vacuum on that engine. I'm going to leave well enough alone for a while before I make any more changes.
