Balance.. is essential to a helicopter flying or not. Originally heli's were never really intended to fly, though their forefathers figured out a way to make the machines beat the air into submission. Perfect scenerio, the heli should not wobble any during flight. Slight vibrations when accelerated become harmonic vibrations and transfer throughout the entire machine. This in turn can effect things like gyro inputs, pitch variations, rattle setscrews and nuts loose, create cracks in plastic, damage bearings and decrease the helicopters overall performance. Balancing the craft perfectly can be daunting at times and takes the utmost in patience and practice. Investing in a high point balancer and a rotor pitch gauge would be your first line of attack. Your first concern would be to make sure that the main shaft( the biggest shaft that passes through the body that the rotor head assembly sits on) is true. You can check this by taking it all apart down to just the shaft and big gear at the bottom and rolling it on the flattest surface you can find with the big gear hanging off the edge as close as possible to the edge of the surface without touching it, I use a piece of granate floor tile I got from home depot for 4 bucks that a plant pot sits on most of the time, if its bent you should notice it by how it rolls, replace if neccessary. Next, Lay the shaft and gear across the high point balancer and watch to see if the gear rolls to the same point everytime, Mark the low point and buzz off a tiny portion of the inner portion of the gear behind the teeth.. when I say tiny.. I mean TINY microscopic tiny..you can always take off more.. its alot tougher to put it back on! I use my dremel with a very fine sandpaper drum for this. Make sure you dont grind off any integral portions of the gear or the teeth itself. and do this until it stops rolling to a specific point. Its also important that there's no breeze of any kind, weather it be from kids running by or pets beggin for snacks or what have you, I do this in the kitchen when everyone is away. Grab the rotor head assembly. The big black paddles are called Hiller paddles, their sole purpose is to help with balance and counteract most of the forces created by the main blades constant flapping.. or pitch variations each revolution the head makes. And the flybar is called a Hiller flybar. Hiller is the name of the guy who designed the darn thing.. and they use it on full size Hiller heli's too, the inner collars closest to the shaft on it are keepers but the ones closest to the paddles are flybar weights these should be kept as far out as possible but can be slid one way or another in order to balance the rotor head when its off of the heli and on the balancing wheels, typically first with the main blades off then compare with them on, also with the swashplate off, its static meaning it does not spin so it should not be considered in the balance.

I Like the throttle stick to be smooth, that’s why I buzzed off the notches.. its just a preference thing, its doesn’t Have to be that way. Same goes for how you hold the sticks, some guys hold them between their fingertips.. Ive been told I do it goofy with my thumbs at the top, those are things that are strictly of your own choosing. Its your baby..