I tried this question on the JR yahoogroup - no response:

How do you set up reverse differential with the 8103?

The specific application is is for landing mode.  When the butterfly switch is
engaged for landing mode, crow is programmed, and the flaps are fully deployed,
the ailerons are biased in an upward position.  In this case, to preserve roll
authority while the flaps are fully deployed, you would like the aileron
downward travel to be much larger than the upward travel - this is reverse
differential.

Some other radios have different differential settings for different flight
modes.  Since the 8103 doesn't support different differential values based on a
switch, presumably there is some mix one could use to accomplish this, and the
mix could be engaged by the butterfly switch.  Someone once told me that you
could use an AILE->AILE mix on the 783 to do this.  On the 8103, AILE->AILE mix
seems to either cancle aileron deflection or amplify it, but not change the
amount of differential in any way.

Does anybody know how to do this?

-- James
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