I am installing the box side panels. When I put them in place c/w the proper gap at the front and body lines in line. These are the measurements I get on the box. I put a level on the bed and it is dead on. From the box floor to the bend is 5 1/2” at one end and 6 1/4” at the other. The front edge of the box side is perfect to the back of the cab. Any thoughts?

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