Lynn,
Why don't you get some jets and start bringing it down?
Roscoe
(from my earlier post
Most carbs, out of the box, run rich. I would suggest you invest in a set of jets and start jetting it down, front and back, 2 numbers at a time. Each time you jet down go out and check your plugs. Do this by bringing the engine, under load, up to about 3 grand and just cruise there for about 30 seconds. Then cut the engine and pull over. Yank a plug or two and see how they're burning. Keep jetting down until it is too lean and then go up 2 numbers. That should set your jets.