I must be doing something stupid - I can not get my aileron and rudder directions set correctly.  I've searched the forums for similar problems, but haven't seen any solutions with recent releases of the hardware (without DIP switches).

I'm using an APM2.0 board (says V2.4 on bottom) running ArduPlane V2.74b.  I've used APM flight controllers on multicopters before but this is my first plane setup. I'm flying a Bixler 1.1.  My FrSky receiver is connected to the APM via PPM input.

I initially setup my plane with both ailerons connected using a Y cable.  Using this configuration, the aileron and rudder directions were wrong.  If I went into the Radio Calibration screen and set the "Reverse" checkbox on both of these they had no effect.  I verified in the "Full Parameter List" that they had indeed set RC1_REV and RC4_REV to -1.

If I negate the output from my transmitter I get the proper control movements but I'm assuming that's bad since automated flight modes will have the wrong directions for the controls.

Thinking that giving the FC complete control over both ailerons might help, I moved one aileron to RC5 and changed RC5_FUNCTION to 4.  That resulted in the following behavior matrix when I push the transmitter stick to the left:

RC1_REV = 1, RC5_REV = 1 - both aileron directions wrong - reversed - left down, right up

RC1_REV = -1, RC5_REV = -1 - same, both aileron directions wrong - reversed - left down, right up

RC1_REV = -1, RC5_REV = 1 - both ailerons work in unison, both up,

RC1_REV = 1, RC5_REV = -1 - both ailerons work in unison, both up.

And there is no change to rudder output regardless of the status of RC4_REV and the status of the Reverse checkbox on the Radio Calibration page.

Again, I can fix all of this by having my transmitter send inverse signals, but this seems like the wrong fix; if I want to use any of the automated modes, I'd think the APM would need to know how to turn right and left.

Can anyone point me in the direction of what I'm doing wrong?