The screw "covers" just look like snaps? Is that all they are? (I've gently pulled on them to see if/how they come off but haven't pulled hard enough to remove them.)
The last time I looked at our racks (both the bunk and the slideouts) neither looked like that. They both had wear marks on them from the gears engaging but they weren't chewed up like yours is. Yours looks like all the weight of the bunk is going onto a small portion of the gear (perhaps due to the bunk not being level?)?
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