Thanks for that! There was alot of good info in that report. I have a very similar setup to that, except I am using to hitec 425bb servos mounted in the tail to control the elevator halves. I think next time I will use a pull-pull setup on them. All other servos are hitec 422's, I'm still using the stock pushrod for the rudder. My control throws are a little less than yours on normal rates but the 3d rates are very similar. Once the 91 goes on the CofG should come forward to about 4" (100mm) I did have it a 4 1/2" with the 46 up front and 100grams of lead. It used to snap on full elevator throw at high speed but I reduced to normal rate elevator throw and it stopped doing it. I didn't do much 3d with the 46 upfront as it didn't have enough power. Blenders were especially good!! I will hopefully get the 91 in a few weeks so we will see how it goes then. Can't wait for that!!!