I am sorry I did not post pictures initially, was just tired and ready for a break. Forgive the old digital camera shots, but I have never been able to get cell phone pictures posted here. This is what I have. Missing center adjustment screw, 6mm I believe. Of course the lock washer prongs are long gone, and I think part of the rubber end of the adjustment mechanism is still in the shaft. Suggestions, I just want to seal the damn thing so it doesn't leak, I have chain lube. I should add it looked like someone had stuffed a small piece of rubber into the adjustment hole when I first pulled it...