Turntable Advice?

Just to be clear, although I did use the words “repair your turntable”, I was not implying that the OP should actually do the work himself. I went on to suggest he send it to SOTA for the Phoenix upgrades and a new motor, if a new motor is even needed. SOTA can advise on the condition of the motor itself. They may even have upgraded the motor in connection with their adoption of the Phoenix electronics, since the latter is designed to drive a 3-phase AC synchronous type.

Thank you all.  Never have I seen such unanimity on a discussion topic!  I will get in touch with SOTA today.
I had read extensively on the web that the Pabst motors were no longer available and that SOTA was not properly supporting its customers.  Should have checked with them directly.
lewm, the table's speed fluctuates wildly - not slight pitch change.  Maybe you've figured it out, because the motor does still turn.

miller, this is why I usually have pros do everything.  I'm kind of hapless and lack confidence that I'll get it right.  I'll see what SOTA suggests and give it a try myself first.

The original electronics used a feedback system to check platter speed.  Sounds like something with the feedback or servo is broken.  Probably your motor is OK, but if SOTA recommends a new motor to go with the Phoenix electronics, I cannot over-state the benefits to be derived from letting them do it. You'll be amazed.

Funny story: about 25-30 years ago, when SOTA first came upon the scene, they offered a turntable as a kit.  A friend of mine who was a very capable engineer decided to build the kit.  When he got the turntable completed, I was invited for its maiden voyage.  The object was just to see if it worked. We sat across from each other at a table upon which the SOTA was supported.  He pressed the start button, and at first we were both pleased to see the platter start to rotate and quickly reach what was apparently the correct 33 rpm.  However, it didn't stop there; it continued to accelerate, faster and faster until I thought it was starting to rise up on the spindle, and I feared it would literally take off and hit one of us. I thought seriously about ducking under the table for protection. Fortunately, at that point he cut the power, and we both started laughing.  He had miswired that servo feedback loop.

@keegiam, your worn-out motor provides you with the perfect excuse to spring for the new SOTA 3-phase DC motor, along with the Phoenix Engineering-designed motor controller made expressly for it, and the Roadrunner tach.

Send your table back, get the total eclipse package which is a new DC motor, drive and regulator. Also get the new platter and bearing. The new bearing has no thrust plate. The platter sits on opposing magnetic fields like the better clear audio tables. 
Keep the SME V. The only arm I would consider in that table otherwise would be the Kuzma 4 point 9 for lower compliance cartridges. These two arms are superior to any of the arms you mention.