Chakster, As I have pointed out to you many times, the CW is OK to sag a little bit. The rubbery joint between the CW arm and the pivot is meant to decouple the CW from the effective mass of the tonearm. Also, a little bit of sag does help to place the center of mass of the CW more closely aligned with the plane of the surface of the LP. This helps to reduce the change in VTF produced by warps. However, you’re quite right that that joint does wear over time, producing excessive sag in some cases. But a little sag is just fine. What’s important is to maintain the decoupling effect. (If the rubber washer were to be worn away or falls out, then there’s a problem.) Many if not most vintage Japanese tonearms have a straight and rigid connection between pivot and CW, wherein the CW cannot possibly sag below a straight line with the main arm tube. Modern tonearms in general have tended to decouple the CW from the main arm. So, I think of the 7045 as a particularly modern design when compared to that of its peers.
Thanks for your photo of the Victor headshell. I don't have the original headshell with my own UA7045, so I could not address the question at hand about the collar/headshell joint. What I see in your photo is that the original headshell looks much like any other standard SME-type joint. Is that the point you wish to make?
