I typed the word “BY” when I meant of course of Buy, in my post above. Most likely this happened because I am speaking into the phone, rather than trying to type with my big fat fingers.
Dover, I certainly could be wrong, but I think the OP is looking for the large nut that goes under the tonearm mounting board and mates to the thread at the end of the vertical shaft of the FR 64. In any case, at least for my FR 64S, the counterweights are not threaded at all. I guess I am making another assumption that a stabilizer is a counterweight.
Dover, I certainly could be wrong, but I think the OP is looking for the large nut that goes under the tonearm mounting board and mates to the thread at the end of the vertical shaft of the FR 64. In any case, at least for my FR 64S, the counterweights are not threaded at all. I guess I am making another assumption that a stabilizer is a counterweight.