Hi Grtfl62
I have the Concept 2QD TT as well and I find counterweight can slide off with some force from the tonearm. I finally got the arm set-up correctly and the 2QD sounding good so I don't want to mess with removing the counterweight now to check. I couldn't get the counterweight screw to budge either come to think of it when I first got the 2QD. Maybe it isn't supposed to move?
I have the Concept 2QD TT as well and I find counterweight can slide off with some force from the tonearm. I finally got the arm set-up correctly and the 2QD sounding good so I don't want to mess with removing the counterweight now to check. I couldn't get the counterweight screw to budge either come to think of it when I first got the 2QD. Maybe it isn't supposed to move?