Are you guys putting loctite on the pivot? Or just letting it ride and seeing if it loosens on its own?
When you have it tightened to the point of no play, are you finding it as smooth/free as your 21s (if you own one)?
I didnt use loctite when I 1st reassembled it. Im glad I didnt, it allowed me to play with the tension and figure out what worked best. Basically, I left it as loose as I could without any wiggle anywhere. Its not like it backed out easy. Once I figured out how it worked best I used loctite.
I think there might be something to too much grease being a problem. But as I said, Im a newbie. I can just tell you my experience. It was always, "smooth" it was just sort of hung at the initial opening. That is now fixed for me. Hope this is come help.