really need more information and pictures here. if it's 6940 locks and you have a collapsible skate, you need to go to a fixed skate. if this is some other lock/clutch/skate setup, the otis linear operators really don't like them. they can be made to work but have seen lots of issues. this is what happens when sales people don't ask any one in the field. they get their bonus and the customer/mechanic get left pulling their hair out.