Acro mode doesn't Stabilize while stationary

[garrett_min]

While adding Flaperon Parameters with configuration formated as follows:
http://ardupilot.org/plane/docs/flaperons-on-plane.html?highlight=flaperon

With succesful configuration of Flaperons as formated:

1. Success
   Flaperons move in correct directions w/ Elevator mixed in Taranis.

2. Fail
   ACRO Mode does not LOCK
   Suggest Flaperons provide a “Stick Input on CH5” resulting ACRO Mode does not LOCK because of a Stick Input from RC5 & RC6 w/ Attributes Flaperons 25 & Flaperons 26