Quoted from pinballaddicted:
I got out topper going today. Turns out to be an easy fix. I removed the front plastic (4 screws out, tilt from the top down to clear Raven and remove) off the clock and drilled the hole the clock shaft comes through a little bit bigger. Turns out the shaft was binding on the plastic as there was not enough clearance in the hole to account for movement in the shaft.
Also the wires are not tied together properly and as Raven pops in and out it would have eventually worn through the unprotected wires. We cable tied the wires together.
Hopefully this will be your issue as well!
Drilling out the hole just a little bit wider fixed my stuck clock issue as well.
I first confirmed it would work by taking the front plastic off and pressing the flippers 24 times. The clock would go all the way around twice.
Put the front back on, clock gets stuck hours 5-7.
Drilled it out just a little. Clock hands rotate all the way around as expected.
Now the only issue I had is the Raven came out once during the game and didn’t go back in. I had to nudge him.
I’ll play with it a bit more and see if that was a fluke or if more tweaks need to be made.
I contacted Stern Sunday night with my issues and videos I posted here. Haven’t heard back yet.