Just cleaned all the contacts and made some adjustments is all I can remember doing for the "no select", but this was 10 years ago. When I got all done, the Seeburg was working as it should.
BTW: You should pull the speakers for cleaning on your 58 Seeburg. All the Seeburg models from the late 1950's had the grill that tillted to the rear at the top. After 40-50 years, a pile of dust collects at the bottom of the speaker cones. You will be pleased at the change in sound quality, once that mound of dirt is removed from the bottom of the cones.
Will check out that web site Chad. Thanks!