Got my TBL a couple weeks ago and it's been great out of the box, except for the hitting the Donnie loop to the Maude exit resulting in s SDTM. That and after a few times removing the glass it started rattling from the music bass. So I figured I'd share what I did to remedy the two as I searched for others with these problems but didn't find much.
I know glass rattle is pretty common in many pins, but for me it wasn't an issue out of the box and developed over a period of short time, so I just wanted to share that it happened. I just lined the plastic glass slides with electrical tape and that took care of it.
For the Donnie loop/Maude exit SDTM I slid a post sleeve over the lamp post located at end of the metal guide on the Maude loop. I had tried adjusting the metal guide rail to no end; it has very limited movement due to the mounts and I couldn't get it to make much of a difference. So with the post sleeve on the end it pushes the metal rail out far enough to send the ball to the left flipper. Huge improvement on playability for my pin anyways.
Oh just remembered one other thing I had to do was bend one of the Dude ramp standups back to stop the ball from jumping up. I noticed that it wasn't angled properly from the start, played it a bit and confirmed it needed adjusting. Seems to be staying where I bent it to and the balls aren't going airborne from it anymore, but time will tell if it will hold up.
Love the game and very happy this forum exists to help keep it running right!