Yep, seems to be working. I had to adjust the RF on one of my Hexars recently. The vertical alignment had drifted off by bit. It’s unclear why this happens on the Hexar, as the vertical adjustment wheel is securely stuck in place with a blob of wax. They do seem to drift, although this is true of nearly any RF. Making the adjustment on the Hexar is fairly easy. Remove a couple of screws, take off one dial, pop the top and bust out your screwdrivers. Instructions - recently updated with better pictures and text from the service manual - are available on the ever helpful rangefinderforum.com. I seem to have hit the near focus on mine, at least with the Biogon. Infinity focus might be a bit off, but it hasn’t shown in photos, yet.

As with any complicated and fragile device, you could break yours by doing this, so do so at your own risk.