I have the YS 1.20NC in mine, a perfect match!!! Even if you just trace the parts out on bond paper it's OK with me. Mine is getting a bit long in the tooth and I would like to build another one for myself, maybe make it bigger for a 40cc gasser?? Mine has no mods at all and is a perfect plane but I think I would like to make all the controls counter ballanced, no real reason, just looks better.