Well how did it go? I've found a slight problem in tuning my 46's. Apparently by running the same props front and back, it created a vortex that wouldn't allow my rear engine to time in. I put an 11x7 on the front and the rear ran fine, even with out the muffler! Darn bolts! I hope that you did get the chance to fly it today, and I'm looking forward to reading about your post flight and your setup! B