Bryan;
I have the Magic with an OS 46fx. I use the APC 12.25 x 3.75 prop on it with 15% nitro. This is the only prop to use. I balanced the kit 4 and 1/2 inches back from the LE. the plane will hover and torkroll at 1/4 throttle. I am just starting to hover so I keep it high. the only thing I noticed is there is a real fine line between hovering and pulling up vertical with the engine. A little over 1/4 throttle the plane starts to pull out. Not a big problem. I really love this plane. where else can you get a $99.00 ARF that really flys???

Good luck,
Tony