hey edh13 did you ever weigh one of yours what did it come out to if you did? is it possible that the little k&b is to light for the front of this plane. would it be underpowered anyway, i know that bushinged k&bs were not known for being powerhouses. there is an os .40 on the bench to. I already test fit it and wont take any mods to put it in. i've got a 4oz flex tank on order thats all the bigger I thought i'd get in there too. you said go easy on the control throws how easy? according to the book or less than that. I set them up to as far as they would move didn't plan on flying it like that though. i know that these planes weret built for speed not 3dish aerobatics.