You might try pulling in some more initial timing. Most times they can stand up "around" 20*. Thing is, when you pull it up that high, you need to find a way to limit the total mechanical advance, because it will be too much. As long as you can limit the total to about 34* all in by about 3000 RPM it will run great and not hurt a thing. It's just something you're gonna have to play around with to see "where" and "if" you get any spark knock.
