I bought a blade balancer from Century, I'm sure heli-proz has them too,, supposed to come tomorrow. With those you're really sure they're balanced. As far as the flybar & paddles, I remember reading in Rays Authorotative helicopter manual to make sure both paddles are the same distance from the control arm (I think), as well as the same angle. The paddles should both weigh the same I would think. Also if they came with weights, they sould be the same size. I'm still new to this too, so others might have better advice/answers. Anyway hope this helps at least a bit
Joe