It's simple. Inside the turntable you have 2 adjustmeters witch can be simply altered by turning on them with a screwdriver. 1 meter is for your brake-adjustment (how long before the platter stops) and the other one is for your pitch-adjustment (you can set the pitch to max 8% or you can alter it to max 16%, i think) and there lies your problem. You're pitch is set for more then 8%, then you have incorrect readings. So the best thing you can do is to remove the platter, remove the black plat that lies underneath it and you will see te 2 meters for your adjustments (it is written above the meters wich is wich). When you have the correct setting, place everything back into place and it schould be allright then.
But my 1210's are set on max speed so my platter dot's do not have the correct measurements also