Tip: If the blade bolts are too loose and you do a maneuver that causes the head speed to greatly decrease then there is a chance you could have an in-air boom strike. Get the blade bolts tight enough so that if you hold the helicopter on its side and give it a bump, the blades will stay in place. Note: too tight and the blades won't be able to lead/lag which can result in a vibration.

Tip: When learning to hover, most people over compensate on the controls. An example is the helicopter is drifting left then you give too much right, now you have to give left to correct for too much right. You will end up working hard to keep the helicopter in one place. Helicopters only require slight corrections to maintain a steady hover.

Tip: secure the crystal on your receiver with some tape. I know, but it's worth mentioning.