RE: Exceed RC Eagle 50
I am currently fighting the same issues. Was working with a guy who builds a lot of these and showed him the issues. He recommended that I adjust the servos to have minimum throw (control arms nearest the attach point of the servo arm. (close to the mounting screw) just did that and it seems to have slowed down the uncontrolablity, now I may experiment with slowing the servo response down. Also just a side note compared the unit to the Eflite blade CP pro, very close to same design however it was night and day difference with controlablity I think the Eflite is much better right out of the box but thats my opion. If I don't have sucess with the Eagle 50 going over to Eflite for sure.