I got the sliders installed last night. between them being worn out and the 2 clip inserts that go into the glass having most of the 4 tabs broken off, when you closed the door there was all kinds of glass slap. Now it sounds solid as closing a safe door, like it should and did when new.

I think a lot of it was the 2 clips that go through the glass as the rear slider bolt was tight, would still rattle and allow the glass to move. Not any more.

As a door engineer for an automotive company this issue was driving me nuts