Everyone’s replies has given me a lot to ponder, @Billy Boy slight contact is actually what I have. The “front” of the drum from about 3:00 down to 6:00 is slightly touching the lock plate. From 6:00 to 9:00 (the rear of the drum) there is a gap that increases from touching, to approximately 1/8”. Basically the drum is sitting forward a touch in the half circle in the lock plate, I hope this description makes sense.