[Greg Ross]

So you mean that the joystick will be ignored unless the trigger is held? I guess that might work.

I noticed that the "new" "white" joysticks (sorry, I don't remember the make or model of the joysticks we have received the last two years) tend to go beyond centered if you just let them go. So if you let the trigger go when you let go of the joystick (kind of hard not to!), the problem will kind of take care of itself. Nice solution!