Hello!
Set the high 6000 RPM advance to 33-35 first and then check the idle timing.
If the 6000 advance is correct 33-35 and the idle is not quite right then that is ok.
Does your distributor have vacuum retard?
My '72T distributor has vacuum retard, you must set the idle advance to 5degrees BTDC with the vacuum off, which makes it 5degrees ATDC with vacuum on.
