Actually servos being reversed and channels being mixed up can be quite common with transmitters that have more than one model stored in the memory. If you were flying model 1, get out another plane, which is model 3 and you forget to change your transmitter, all sorts of problems are possible. Some of my planes use 2 channels for one control surface, so you can see the possiblities of a huge screw up. It does happen and do not ask me how I know. Good Luck, Dave