Hey, was just playing around with my 5512's spacer ring (the one underneath the bezel), and I've found a way to create a tighter fit, and have it work similarly to the thicker ones a few guys here have bought i.e. where it's much harder to spin the bezel, and works best when you apply some downwards pressure to it. I feel like a bit of an idiot posting something this simple, but I haven't seen it mentioned and I did a quick search but found nothing - with the influx of those buying the older rollies I figured it might help a few people.
It's nothing hi-tech, doesn't need any tools, and takes about 30-seconds.
All that needs doing is bending the spacer ring in a few places. I found one crimp wasn't enough for me and the increased resistance in turning it was asymmetrical, two (at 12 and 6) had the same problem, but 3 (at 12, 4, and 8.) worked well. Then I went a bit overboard with 4, but corrected it nicely by smoothing out the bends.
It works *really* nicely, the bezel's a little hard to turn without any downward pressure, but not impossible by any stretch, and with just a bit of pressure spins nicely. The height of the bends can be changed to alter the resistance etc. Here's the pic: