I was pretty successful is adjusting the engine to run decently today. Leaning the high speed needle, regulator a 1/4, and some adjusting on the low speed needle helped get it running better. It tends to gain a couple hundred rpm after the engine returns to idle from max throttle. Does this mean that it need to have to low speed leaned or the regulator. It will go from 2400 to about 2700 rpm in a few seconds. Otherwise it seems to be running correctly with great power. 11200 rich for flight on a 13x4W APC. This is on YS 20/20.

Thanks
Sport10