[Chaplin]

Luke-
What is your engine set up? What heads, cam, compression ratio, etc?

What jets do you have in your primaries/secondaries?

I had the exact same problems you are describing and I finally put my car on a chassis dyno this week to tune the carb. What I found was the motor was running very lean, which caused the same type or lean miss/hesitation and seeming lack of power that you describe.

The jets in my carb were 75 in the primaries and 83s in the secondaries (I have a mighty demon 750 with mechanical secondaries). I had to re-jet it to about 84s in the primaries and 92s in the secondaries. (I am going to experiment with going down on the primaries some b/c I pulled the plugs today and they actually look a little rich now). But WOW what a differnce. It runs like a different car now and the power is now finally what I expected it to be.

I would bet that you are also running too lean.

Hope this helps.