Problem with modding joystick

replaced my stock joystick with a sanwa one, and i put it in, screwed it in, and connected the connector to the joystick. I then tried to put on my ball, i tightened it all the way, but now the joystick won’t move! do how do I tighten the joystick to the point that the ball doesn’t unscrew when you twist it?

Did you try putting a flat head at the bottom screw, then twisting the ball top with all your might?

That made it tighten, but then the stick won’t move.

You might have the internal dust washer (if there is one) stuck between the shaft and stick assembly. Unscrew everything and try again and make sure everything stays loose as you tighten everything down.