capnic: hm, that Graupner C-5007 has almost identical torque. It might help you with that last quarter of knife edge looping if you installed C-5077 (5.5kg versus 3.5kg).

I will check the CG location and will get back to you. Where do you have your CG?

As far as props are concerned - 11x5 will make the most out of OS .46 FX. If you use higher nitro content (15% and above) try 11x6 - thrust difference is very obvious.

Sašo