Yeah the locking nut was a bad choice on my shops part. Going to replace it with a normal one.
The bolt is now seized in the ball which is causing me a lot of fun. Heat and beat has been my method so far.
I'm getting a sloppy banging on upshift recently. Trans may be going south.
Do you get a bangint if you let out the clutch at a stop using the brake to put the drive train under load? Mine has 180K+, so I'm not surprised.