Uneven space between box and cab

Will post pics later...

Washed the truck on Friday and noticed that the spacing between the cab and box is quarter inch wider on the drivers side then on the passenger side. I can slide my fingers up to the knuckle down the entire length on the drivers side but not the passenger side. Got underneath the truck and checked the frame out, no apparent buckles/bends/stress points on the frame. Panels on the truck box show no signs of twisting or ripples. Truck drives straight with no vibes what so ever...appears to be quarter inch difference between sides.
Truck is an 09 DCLB with OME/LR UCA/TSB AAL. Truck has not been wheeled hard or abused...I have no idea how this happened....like I said above...will post pics after work...

 

loosen the bed bolts and you can adjust the it.

 

^^^ like he said. The bed may have been put on crooked.

 

It should be under warranty still so if you don't want to mess with it make the dealership do it.

 

Easy to adjust yourself.

 

Just to close this....removed the bolts one at a time...greased them up (winter down the road) and adjusted...PITA still out a touch, not noticable only to me...tks for the help guys!!