Hesitation issues - need help

crackedback said

10* initial isn't enough timing. Turn it up to 16-18 and see how it reacts. Then tailor the mechanical advance to hit your total number.

I bet it has pretty significant rpm drop when put in gear from your p/n idle RPM.

Solved to some is a horrible tune up to others. If it smells like a fuel truck out the tailpipes at idle, it's not right.

Click to expand...

You are right - it did have significant rpm drop during first drives after install. But I did advance the initial timing a bit from 10* to 14*-16* range, and richened it up a little (about a 1/2 turn out)
(I also adjusted the choke and fast idle too) and it's running about 800 in gear when warm, then about 1200 in park.

Can you describe how to "tailor the mechanical advance?" Thanks!