I have two LP1240's. They are for home use. One has a loose tonearm bearing. It "rattles" when I use the arm manually. It appears to be from the horizontal trace. It looks like all one would have to do is slightly tighten down the vertical needle bearing on the top of the tonearm housing in order to shore this loose arm up a bit. Is that possible?
Note, I have 48 years experience with TT's and tonearms, so I know them well. These are the best I have ever used, including both my AR's (that's why I bought two).