Tuning For Detonation

Actually I find it commonly does. If QuickDart is noticing detonation at light to mid throttle then yes its the problem of using vacuum advance with the FBO distributor's advance curve. A few of us have had similar issues with the MP distributors that used the YH advance.
If it only occurs when the throttle is at the floor or nearly at the floor, then yes it probably has nothing to do with vacuum advance.
Between half throttle and nearly full throttle its a toss up and having a vacuum gage and a knowing what the advance curves look is one way to pin it down.

Right, it's possible at part throttle. I need to reprogram that everybody might not have the same issue as I do. Mine only did it when the gas was plowed into real hard....kinda like what you'd do to a disease free pre plastic surgery young Pam Anderson.