B&M Converter is bad

Hmmm, here I thought I would have to take some out.

If I adjust closer to 20* btdc the starter sounds like its being dragged along after the engine fires. Is that what you mean?

Yes. You can check that it is "kick back" by cranking it with the coil wire pulled out and grounded. If it cranks good when hot, with the wire out, you know it's "kicking"

So where is it, 15?

Idle screws. Many guys use a fixed amount like 1/4. I don't I peak them as described, turn them in until I get the SLIGHTEST drop and then back out the tiniest amount. You will get various opinions. Main thing is that it's warmed up.