Or: Baby Yoda goes for a ride.
My brick solution was working fine, but I couldn’t see what the table motor was doing. So, I put the whole thing on its side.
I did confirm that the brass insert in the middle of the table is 1/4-20. So, I put in a short bolt, some Fun Tak (or clay) and a lightweight object to scan.
The table started to spin, but is now hanging up. Motor doesn’t seem to be doing much. Either a bad motor (not too horrible to replace) or a bad driver board (into the garbage we go). I’ll have to remove the table motor and see if that’s it.