Hi, I built the PT 40 Mk II about two years ago and like the kit and the plane very much. I had flown RC before but had been away from the hobby for many years so I kind of started over. The A version of the wing had a little too much dihedral for me I soon found and I underpowered things with only a OS LA 40 engine and a heavy build and 5,000 ft flying elevation. Soon after I ordered another wing kit and built the sport wing (B)version and put an OS FX 46 engine in. I also made both wings with bolt down versions. It'a a real solid trainer now and I find the sport wing version and hotter engine to be a great combination. The A wing still comes in real handy to use in getting other new fliers started.

I think you'll find it to be a great, stable and sturdy trainer. Best of luck!