Shut down Aces high completly. Click on start and run, type explorer. Navgate to c:\programfiles\htc\aceshight\settings.
Find these files and delete them
stick.cfg
jsmap.cfg
global.kmp
chute.kmp
gunner.kmp
vehicle.kmp
view.kmp
plane.kmp
Reopen aces high and you will now have the default settings. Remember that you will have to resetup your joystick and configure it.