My big slide squeaks, squeals, and shimmies back and forth. Motor seems to struggle. All the surrounding neighbors stop and look at what is making all the racket. I have lubed everything I can get access to including the rack and pinion, slide seals, slide rails, and as far down the screwjack tube as the drylube would reach. Slide unit is squared up and appears to move freely (and quiet) once it gets past a certain point. I even tried the service bulletin Lippert issued regarding lubrication of the pinion gear packs. My unit is a 2013 and has been doing this since I brought it home. Would love to be able to get rid of the noise. Every time I use the slide, I am waiting for something to fail.