I have had a rattling while driving of what I thought was the Slide Topper awning that I installed over the slideout. Come to find out the rattling is due to the metal arms on the outside sides of the slide. A compressable rubber sleeve on the top of the verticle slide pole has been compressed out of functionality and no longer provides tension on the diagonal arm when the slide is in. Quick fix for now is a split garden hose washer slipped under the sleeve to act as a spacer. Plan on converting to an appropriately sized metal spring when needed.