I think I may have the main rotor blades too tight because I thought they have to be as tight as possible so they don't move at all in the grips. My manual does not say anything about the tightness. hmmm. Maybe I need to do some reasurch. It doesn't really tell me anything on raptortechnique web site either. I will loosen them and try it. But as you said not so loose that they drop, but loose enough that they will drop with a shake. Is that right? I read and noticed another thing that might cause my heli to rock bad. I think I need to pull the tail boom out a bit so that the belt connecting the main blades to the tail blades is tighter. I think the belt is a bit loose.