I don't think I said it requires a 4ST, and 2 strokes run fine inverted if you can tune an engine correctly. The U-Can is more of a fun fly plane I do agree, but a good starting point for anyone, according to the U-Can forum here on RCU, and it has a very big following, one reason I got mine, and loved it ever since. I think I read here that you said one of your club mates suggested you break out the U-Can, listen to him/her and go have a ball