I quite agree, this model needs nothing more than the stated 52-56 four-stroke. I used the 55AX because I had one available and I figured the weight difference would have been negligable anyway. As for servos, I used JR549s on the ailerons and JR539s for everything else. Digital servos aren't really required but again it gets back to what you have available or how much you want to spend. Since you have two aileron servos there won't be any problems with torque anyway.

Here are a couple of photos of my Nemesis. If anybody knows where I can find a replacement canopy/top deck I would really appreciate it.

Cheers,
Greg