A heli is a VERY complex machine that has to be balanced on ALL axis, not to mention all the other components that get into it...If you don't have a super strong anderstansing of the heli flight principles, a bunch of plans AND a complete metal machine shop then give it up. If you want to fly a heli, get the cheappes one and learn on it or if you want to ASSMBLE one get the Quick .50 or .60 (like i did) and you will get a bag-of-parts that you'll have to put together...that will teach you...