Hi John,
You're correct, fuel should not be on concrete. My son and I was testing different fuels, props, run times. Sometimes I get way to much junk out and after I'm thru playing, its a lot of work putting all my junk away. The plane in the background is one that was given to me and I need to get it ready for any new fliers that wants to crash a plane. I wasn't able to go to the field today, stupid dentist appointment but I hope tomorrow will be a different story. My son and I ran the Merco a few more times, just wasting fuel. I've never had a plane, when on the ground, you push the elevator to up position, the plane leaves the ground, hope this is a good thing. I bench trimmed everything I could think of, even the vertical hanging trick and everything seems fine. I believe once she's in the air the truth will come out. Sharp eye there John and thanks for your reply, Gary