My drivers side door on the latch side has sagged enouph to cause the hinged side to rub on the fender. According to the repair manuel it can be adjusted. The bolts from the hinge to the truck need to be loosened. Can this be done with the door on or does it have to come off?? My truck has power windows and locks. If the door comes off how do I disconnect that black rubber tube with the wires inside that runs from the inside of the truck into the door?? I'm new to the world of blazers, all help is appreciated.