This sounds very much like a worn bearing issue. I was pleasantly surprised when I had my VPI bearing worked on some years ago.
I'm guessing you are writing about a used Aires. Am I correct? Do you know how old it is? The bearings of VPI TTs need to be worked on on a regular basis.
First is the need for lubrication. Is your bearing inverted? Or non-inverted?
Next is the possible need for the replacement of the ball and thrust plate. Have you inspected these?