I have the drivers door apart on my 420 sel. Replacing the window reg. Got the old one out (no problems) ready to put the new one in. The window is resting at the bottom inside the door. I raise it up and a nylon slide falls off the lower left corner of the window. I didnt see how it was placed on the window. Can someone explain in words how it rests on the window. It's early here in Sacramento on Saturday and want to finish the job.....Anyones help will be greatly appreciated......