i am glad I read this. I have an ultimate that used to have a Supertigre 91....what a piece that engine is..anyway I have a 1.80 saito to put on it. I was scared to use it but i think i will now. I was going to sheet the elevator halves and try something different with the elevator servos, maybe change the wire mount for the top wing.....any suggestions? and any weight problems with a 1.80...i think its lighter than the 1.20