Anybody working on their truck take a look a fit of fenders to box. Mine has daylight showing. No big deal. Just a bit of seam sealer. Shut the lights out in shop and flashlight the seams. Road slop splashing into box. As well , the box lights leak a bit, and there is a couple holes at back of box dribbling. As an aside, take a look at your spare. Mine was not balanced, so get it balanced if you figure on using it.