When I first bought my LP12 just over 3 years ago, the speed was way off, it was about 28, instead of 33.3 (whatever), everything sounded really slow. Also, the arm board was wonky. The chap who sold it me was liquidating his hi-fi shop; Technosound Systems Ltd, Dunstable, Beds. He was the owner and proud to tell me that he sets up his own LP12's, well as Mr Pig stated earlier in this thread, so-called professionals can screw up decks; the guy I bought mine off certainly did.
Audiofile in Cambridge charged me £126 plus vat to replace a few basic parts, adjust the axis of the motor to get the speed bang on again, and a general service. When they finished, it was much better, and the arm board was level etc. They do appear professional and on the case.
Malcolm inspires confidence when I talk to him on the phone, and he definitely not a teenager, which again, inspires confidence.
I agree Ian, I don't want to really get into building a support system while I service my LP12. Perhaps I might look at that in the future, but for now, I'll spend the £60 and the chocolate