What carbs are you guys running on your 360's

gt, there's no reason a factory jetted 750 should be dead rich, or have a "popping" issue. The stock jetting would be in the low 70's primary, and close to 80 on the secondary side. Is this a new carb, or did you pick up a used one? Give us the list# so we can determine a baseline.

Just be careful dropping the primary jet size more then 2 numbers or so from how it was delivered stock. Most will develop a lean condition with any more then that.

I agree with rumble as far as any extra info you can give will be helpful.