Try pulling the subplatter out and cleaning it and replacing the oil. It may have just gotten a little gummy while sitting.
Rega p25 slow RPM's
My Rega P25 is spinning very slowly. It has been un-played for about 3 years, stored, dry upright. When the "o-ring" belt is removed from the drive pully the motor seems to turn fine. It appears as thought the dive pully main bearing needs lubrication. The manuals and lit suggest the bearings are sealed and not servicable unless by a dealer. Any pointers would be appreciated.