If you are having what seems like radio problems, because the heli is doing some strange things. Mine would go up and down and sometimes twitch. You guys give me some good fixes to try, but I still had problems. I found that the antenna connection in the transmitter had abad solder joint. if you look inside where it mounts you might find a broken solder joint, next to the mounting bracket. it fixed 99% of my problem, but I still have a small problem sometimes. It will twitch up or down. that could be the play it has in the servos. I hope this helps. Thanks, Lenny