Yeah f2racer, I hear you. The Pro-46 weighs 17oz. The Pro-36 sounds like its a real screamer, like its big brother the 46. I've had such good service from the GP-42 that I don't even know what comparable 40's are like. So now you got me goin, "hmmmmmmmm".

Let me ask you, did you have to add any nose weight?

Sometimes that consideration helps one decide a engine/plane combination.