Well, it took a bit of troubleshooting with the ignitions we have it solved.
I had one mag timing housing that had a bad sensor. Not sure exactly what's wrong with it. The resistance was good on the pickup coil, so maybe one of the internal teeth was bad. I didn't open it, just sent it back.
With the new sensor the engine idles nicely, even with the 35-37 degrees advance. Now back to flying!
Thank you everyone for all your help!
-John
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