hi all!

so i've decided to calibrate my technics.
i took i multimeter so i can measure impedence, i hooked it up
to the terminals, as mentioned in the owners manual, i measured, and then changed the value of the pitch gain potenciometer which is under the pitch slider circuit board.
i measured again, and.... nothing noticable happened !
so i turned the potenciometer all the way to the end, and checked the impedence again... nothing happend, but i could see clearly that something did happen, at +0.5 of pitch it was like +6 of pitch.
i've returned it all the way back to the begining point (although i'm not sure i did...) and checked, the turntable worked as it did before.
but still i remained with my problem: at +4.2 the the dots that indicate +6 of pitch are standing still, which is o.k but this situation does not occur on the other tt'.
second, the other tt' has a two zeros problem, i mean it speeds up until a certain point where it goes back to zero pitch. i don't know how to count the Khz so i can change its pitch definition.
i would like to get some help about cause i don't like to screw one of my babies.

i beg you, please help!!!
shay