Okay....here are some photos of my KC with the "Crow" setup.
The setup is per BVM instructions, with an added touch. Code 66, flap system, the delay is 2 seconds, allowing the flap servos to move slowly. Make no changes in servo speed in code 24.

Standard aileron set-up:
A left hand roll command produces upward deflection of the left hand aileron, and a downward deflection of the right hand aileron.
A right hand roll command produces the exact opposite deflections. Right hand up, left hand down.

Aileron deflection/movement during "Crow" operation:
Since both ailerons are already deflected upward, no additional upward deflection is required to produce the desired roll direction.
With both of the ailerons deflected upward, during a left hand roll command, the right hand aileron is deflected downward toward the neutral point, while the left aileron remains up.
A right hand roll command deflects the left hand aileron downward toward the neutral point, while the right hand aileron remains up..
My ailerons go below neutral approx. 1/8" at full stick deflection...both of my ailerons also move above the crow setting approx 1/16" in either direction at full stick deflections.
Normally, you will need no more than about 1/2 aileron stick deflection in the landing pattern. The ailerons are quirte effective while in "Crow".

Also, some up elevator deflection is needed when lowering the gear and flaps, and adding "Crow.".
The use of a "Flight Mode" is highly desirable, as the JR10X and 12X radios will remember the trim settings at each flight mode setting. Lower the gear and takeoff flap, trim the ailerons and elevator, then lower the flaps to landing configuration (including Crow), and retrim. No more trimming is necessary.
Each time you activate the flight modes, the elevators will move to the trimmed position. In code 66, my down flap and elevator positions are Flight Mode 0 Normal/Normal; Flight Mode 1 MID: 59% with elevator UP 10% Flight Mode 2 Landing Flap down 125%, with elevator UP 50% Auto Land INH.

Photo #1: Clean wing
Photo #2: Take off flap deflection
Photo #3: Landing flap with "Crow"
Photo #4: Closer view of landing flap with "Crow"
Photo #5: Right roll with "Crow"
Photo #6: Left roll with "Crow"
Photo #7: A better view of right roll
Photo 8 and 9: straight pushrod.

I use the flap switch for the flight mode activation.

Here's the photos....