I had my Reds engine pinched after compression started to fade. I broke it in again and have tuned it in the parking lot and it was running great. The power and speed were back. On the track it was a little weird though. Coming off the 90 degree left hander heading onto the the straight the engine would start picking up RPMs just fine, but 1/4 to 1/3 of the way into the RPM band it sounded like it would go rich and struggle a bit. Keeping the throttle pinned, the engine would clear out and would accelereate normally again. It would do the same thing every lap. I'm not sure if the bottom or top is too lean or too rich because as I said, it was running great in the parking lot and on the track, bottom end from idle seems good and top end seems good, but not the part in the middle. In the parking lot it rockets out of the hole even after idling for a while. Thanks for any help.