When you get it all put back together, you might consider dropping some prop pitch. I don't know what you have been using, but it (apparently) is a bit too much pitch resulting in a bit too much speed, resulting in............ you get the idea! I like the Mag 46 and I have used it with 11X5, 11X6 props, and on a Pulse XT, a 12X4 with good results. The Pulse is a low drag airframe, and even with the 4" pitch prop, it is surprisingly fast.

Good luck with your rebuild.