Thanks a lot for the info. I just got back into rc airplanes last year after about 15 years. I just build and maintain the planes, my son is the pilot. He has made it up to a Matt Chapman 46 size with a saito 82. Only one minor crash in about a year. I have been looking at buying the new Hangar 9 27% that will be available later this month. I am also trying to decide on a gas engine (fuji 43 or evolution 45). I am sill have a lot to learn, these forums a real help and people like you who help old retired people like myself. Thanks a lot.