Evo 26 made it fly like a foamy, Mine was nose heavy, and heavy. I have traded the evo for a 2 meter patternship. I'm either going to put a Saito 125 or an OS 120 AX.
I didnt fly it a lot with the Evo because it would shake very bad from idle to ~3500 rpm's.
I think the saito 125 would be the perfect engine .