If the MCX and MCX2 fly OK with your DX5e, then its dip switches are set correctly. All 3 of those birds use the same setttings on the DX5e. I suggest that you rebind to the transmitter. It is easy to do it wrong. It is also easy to inadvertently hit the trainer switch and loose bind. Been there, did both. Another thing to check would be both swashplates. One may be separated.