My recently purchased NIB Met Prem (date on back is 8/14/13) has a problem with the ball rolling out of the snake and then STDM rather than in and locking. If I use my fingers to roll the ball over the lip, it goes that far with no problem. The problem seems to be the 'tongue' flap. Instead of the ball rolling over the lip then downhill into the lock, it has to continue uphill on the flap. I would assume the flap should be angled back into the lock and not uphill.

Can anyone confirm this? I found this thread and upon inspection with a flashlight I can see the exact same setup as pictured in this thread. There's a screw in the center of the lip and the screws/washers look exactly the same. Could this be my problem?

Video showing how the ball must roll uphill before falling down into the lock. Is this normal behavior? Only a fairly powerful shot will lock. Anything else will go in and roll back out, usually STDM.

I played another premium today and it has the same screw in the lip. That's at least 3 shipped that way. The one I played today wasn't as bad as mine, but still had roll outs. At least they didn't go STDM, they generally hit the left flipper.

I haven't done any tweaks on mine yet. I'll try the adjustment screw and if that doesn't work I'll look into adding washers to lower the jaw.