Well as you can tell I am a "newbie" on the juke box. I usually fix stand up arcade machines. So I have a question. What is the TMU? is that the rack of all those numbered dials at the bottom of the rack where the records go? Cause I noticed that all but 3 are set at 0-5 the rest are on 10

Just picked up a seeburg STD3 with a record that was hung up in the record slot. I finally got it un stuck from the mechanism. Now when I press a number to play a record it will travel up and down the rail. It will do this 2 complete times and then stop. Almost like it is out of sync. I was hoping s...