Not one screw in any hole. Can't see into the hole to see if the screw heads just broke off. Is it possible they were never installed? Don't see any indentation around the screw hole like something was previously there. We've had the unit since Aug 2015. Wasn't used much until a 2 month trip in Sep 2016 then a 5 month trip starting last May-Oct, 7000 miles.
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