I wanted to add that tiANci is probally correct about it not being the perfect choice, and I did not want to imply in my previous post that this was a perfect setup. I am just saying that you could probally get by with the .61 if your flying skills are good until you come up with a better combination down the road. I have an old stick .60 with a .46 Evolution in it. It is not the right combo, but the Plane is flyable with a little skill on the sticks. And after some of my more top priorities get taken care of, I will be finding a better engine match for this Plane. Sometimes you just make due with what you got unless your flying abillities limit you to having to have the perfect match to avoid disaster.