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| p.1 #2 · Fix for slipping tripod mount |
You mean the tripod collar, right?
It shouldn't be either slipping (allowing the lens to rotate), or bind and grind. When finger tightened, the collar should lock the lens in place without difficulty. If it is slipping/rotating it may have gotten some sort of lubricant on the contact surfaces. Try cleaning with rubbing alcohol inside the collar and the outer lens surface.
Hope that helps.