got a pair of 1210's a while back, pretty much brand new, 1 careful owner that never really used them.
there's a slight problem with tracking on one of them, when setting the tracking up using a blank vinyl, no matter what weight/hight/skate setting i use it still drifts in.
i can get it where its only very slight, but still causes issues with cueing (and occasional jumping) when using some tunes (anything with low pads or a non mono bass), these tunes however seem to work fine on the other deck.
I have changed the needles/stylus/head shells to make sure it isn't that.

also the part where the hight adjustment meets the deck itself seems slightly looser in comparison to the other. like a loose fitting, nothing mental, just a little more give when you wobble it.

its not a major problem and for the most part isn't an issue, I'm just wondering if I'm in need of a new tone arm in the future or do other people have similar problems and its just manufacturing faults.
any help appreciated.