Timing running at 20* advance...

I don't get the problem; 20 initial and 30 power, both with the Vcan disabled. And it idles dead smooth and has plenty of power.

If anything;
TDC is not TDC,and
there's something wrong with the centrifugal advance system.

If it doesn't detonate just DRIVE it,lol.
Usually, best max timing is 30-32* on a slanty, nothing abnormal here. The fact that the initial is higher is simple, the mechanical plate isn't adding much, why and where
that came from is the question. But like the old saying, if it ain't broke!!!>>>>>>> Curious to see what vacuum adds..............