I had a situation where the steer motor would always turn hard one way and the invert steer direction button didn’t do anything. It came about after putting a backup cytron into a previously working system.
Turns out the header pin for the dir pin was not actually making a connection with the cytron itself and so it was not getting the signal to change direction. I soldered wires from the back of the plug to the pins and now it works fine.
I think the trace to the pins must have broken because my solder joint itself was good. I saw other posts on here about people thinking they had burned up their cytrons and this might have been the problem