The MFC-2085 takes one Aileron input and mixes it to two Aileron inputs. Jeti setup only allows a 2 aileron/servo option. Flap is ok because Jeti allows a one flap option.

Will the use of the 2 aileron option cause mixing errors?

Better How did you wire yours or did you bypass the MFC?

Thank you

Just re-assign the aileron2 channel to something else, or ignore it

You could also use the 1 ail setup and add a flap in the function menu, downside is you loose the butterfly/flap function

You just assign one Aileron 1 in Jeti servo assignment and don't worry about Aileron 2 in the radio, also if you use an assist RX and connect the MFC via SBUS you will have no stabilization via SBUS.
You will need to connect the RX to the MFC with each output if that makes sense as MFC does not support exbus inputs only SBUS from memory.

Ok thank you all.