What causing this to happen

[Darin Jordan]

Yes, I just rebound the system without holding the throttle or steering control, all neutral positions.

Exactly... it's during the bind process that the RX establishes it's failsafes... If you bind, then adjust your throttle range at the TX, the RX has no way of knowing what that new range is. Same goes for steering. You could actually hold steering to the right or left, then do the bind, and have the failsafe position be to kick the rudder over in that direction in the event of a signal failure. Pretty cool setup.

Glad you have it working for you now! Have FUN!!