it is an aftermarket tailgate. as the the latches on the tailgate we cant change them as there is no sloted holes in the tail gate. the ones on the body has been moved by someone else. the latch on the drivers side is almost touching the bed area where the passager side isn't touching at all. as for the gap being off vertically on the drivers side i don't know why as that area wasn't touched. could the tailgate be that far off?