Blenheim flaps.

[Sokol1]

That image shows 3 settings. Can you explain exactly what they each are?

1) Joystick
+
2) Key 7 joystick
+
3) Y axis

Means that I use "Joystick Axis Y" (joystick elevator) momentary modified with "Joystick Button 7" to control "Wheel Brakes".

So, with button 7 pressed the movement in Y axis dont afect elevator, but brake.
When button 7 is released Y axis control elevator again.

This allow set "Parking Brakes" - good for warm-up - in Blenheim (and other planes) - to release, just hit B (key).

Sokol1