More good news, after another 20 minutes of flight time the MLD 28S is turning the 16 X 10 wood at 8610 RPM (out of box RPM 8500). Matches Steve's data 16 X 8 = 8600 RPM. Starts up with 2 flips and starts on one flip the second run. 33 degrees at the field today and the engine ran great.