After cleaning up my new Universal III I was still having trouble getting the grippers to open at the end of the bed. After hunting around this blog, I discovered a post that indicates that the knurl pin is the problem. You had posted a very helpful diagram! (below) Anyway, the top is broken off – basically flush, which is why I didn’t see it before. I can’t imagine how this could have happened. Part B seems to be stuck in a pushed-in position. Any thoughts how I can get the knurl pin out? I’m hoping Fritz will have a replacement.