I did put in the default scaling for the stick (and completely forgot to put it on the rudder) because it's what I used, sorry if it messed you up.
Dunno about GVs, I just used mouse + keyboard for them ever since their control overhaul and it worked pretty good that way.
Be aware of my control mode system. The hat on the side raises/lowers the clipboard and changes control modes. Press the same button that gets you to mode 2/3/4 to get back to mode 1. Mode 1 is normal, and the only changes I made in 2 and 3 are the trigger firing only the primary or secondary weapon.
Mode 4 is for the CM Eye, try it in the TA by pressing F5 in the tower. Hold the trigger to enable moving the Eye with stick and rudder, and throttle up to move forward. Hold the pinky button instead to move in reverse with the throttle. The "Big Red Button" uses what's called map mode, where the Eye will look straight down and you can pan the world with the stick, throttle controls the maximum speed. Useful for getting oriented.
It's there if you want.

Have fun.