Thermoquad idling issues
In this order:
[1] Engine idling, look in the primary throttle bores & see if fuel is dripping from the boosters. If yes, that is the problem. Could be poorly seating needle & seats, wrong float level, internal rubber o rings missing or leaking.
[2] Check the spacer/gasket under the carb. Check that it covers ALL the passages in the carb base that cause an air leak. You need to REMOVE it to check it properly.
[3]What are the cam specs?
[4] Report back.
[5] Congrats on using a great carb.