I also have the Midwest Extra 300 with the BME50 engine. It is a great flying airplane with plenty of power. It Tacks 6800 with a Pro Zinger 22/8. I ran the engine at home to make sure the carb was set right.. I ran the engine for about 20 minutes using Lawn Boy mixed 40:1. The next day I when to the field and put it in the air. Everything worked as it should and have not flown again due to back problems. It wgts 15 pounds with 1800 MAH ing battery and 1500MAH recvn battery. This is one airplane I hope I can keep aroung for a long time.

Thanks