The tabs that you screw through to mount them are super weak. Any amount of bending or sideways pressure makes them break. Maybe I was being too rough but it doesn't seem like it took much.If this does happen to you just take the tab you just broke off and use it as a "washer" over the two wires it was originally welded onto. Probably stronger that way to be honest. They will bend when you snug them up but it should hold the trays on well.
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