Had the same problem with my Winwing when i first received it. Turns out the plastic "neck" on the actual TDC slew stick was too long and hitting the sides of the housing when moving in certain directions. Joystick it just like a PS4 or Xbox joystick, so I popped the TDC joystick portion off, file down the neck till it cleared all sides of the housing while depressed and no more issues.