FUTABA 12K Instruction Manual page 178

SWASH MIX
The swash mix function is used to correct the
swash plate in the aileron (roll) direction and
elevator (cyclic pitch) corresponding to each
operation of each condition.
This function allows the independent rate
adjustments for the ailerons, elevator and pitch.
RTN
HOME/EXIT
RETURN
Setting method
*For a description of the switch selection method, see the
<Functions of Model Menu (Helicopter Functions)>
178
Example of use
(Currently selected condition name)
<Push Dial>
reset to the initial value.
*When mixing includes master side trim, select [ON] and
when mixing does not include master trim, select [OFF].