Hi Bob; My name is John. How did you purchase the table, was it brand new or second hand? I am somewhat confused by your statement that the arm appears to have it's own table. Do you mean it has an arm board attached? The armboard is a small piece of acrylic that holds the arm and then mounts to the table. The PT arm is a common combination with the VPI so unless you have bought an armboard that has not yet been drilled out, then yes it probably is set-up for the PT arm. Should you have a blank arm board I am sure Harry at VPI will exchange it for a pre-drilled board. The grado cartride works well with the PT arm, I personally would keep it. If the table is used; I would spring for a new belt. Other than that, there is not much to setting up the Jr. Just make sure the table is sitting on a firm platform, one that does not jiggle around because the table is sensitive to vibration. Let us know about the status of the armboard and good luck. Have you ever mounted a cartridge? Or is it already on the arm.