You have to reset your travel to 100% in the right direction. You cannot increase ATV or end point on the master and expect the slave to match up. Also make sure you go into Auxiliaries and null all the preprogrammed switch assignments, unless you are using them. The users manual doesn't express this very well. Futaba should have had the default at null, but some computer genius decided to make the default auxilaries preassigned to a switch. When I got my first 9C, I almost lost a plane, because one of the front knobs was assigned to auxiliary, and not nulled. That could be why you are having difficulty, because of a similar situation.

Hope this helps. Good luck, it's a great radio.