Not sure what’s causing this. Recently, the diverter will open when lock is ready. After locking ball, the diverter tries to close but only moves slightly. I looked underneath and everything looks fine. When I manually move the diverter I still
have to move it back to its default position.I didn’t replace the sleeve or coil stopper yet. Do you think it could be the compression spring? It feels like there’s not enough tension to send it back.

I'll start with the coil sleeve. As for a spring being off, the only spring I see is the compression spring. Looking over the manual, I don't see any other spring needed.

Ok, quick update:

I replaced the Coil Sleeve, Compression Spring, Plunger Link and still getting the same behavior oddly enough.

When I run diagnostics and perform a test for that coil, the diverter will open and close without any problems.

During game play, this is when I experience issues. Lets say that I get the lock opened to lock a ball. Normal behavior would be to close the diverter after getting ball 1 locked. In this case, the lock stays open. Therefore when I plung the ball after getting the first one locked, it goes straight into the spinning table and goes through a ball search before the table spins the ball out. Just curious if anyone else has experienced this same behavior on their machine.

Thanks

Update:

I was able to finally get my diverter properly working as it should. Thanks for the detail description GoodOmens.

I took the diverter completely apart after finding out that a new coil sleeve, plunger, compression spring didn't do the trick. I noticed while moving the diverter around freely that it was gunk up a little. After moving the diverter freely after this, I position the diverter in the closed position while pulling my plunger as far back as it could go without being out of the coil. I then tighten it and now it's closing/opening correctly. Glad to be batting around again.