[rdorman]

The dyno guy called it blueish grey. I must have been thinking about the puff at 6000, it was black. I am going to be working on the carb in the very near future. What confused me most was the big jump in lean at about 2600. It went from 14.0 to 1 at 2200 to 17.0 to 1 at 2750 and didn't return to 14.0 to 1 until about 3400.

At full throttle and those RPMs I would have thought we would be into the mains and I would imagine the power valve would be open. Sooo, how to correct the lean condition in the RPM band. Perhaps the secondaries are opening to slow? Or there simply is not enough fuel from the transition curcuits.

Hoping you all can help!