hi, just thought i'd see if you all know what the culprit might be before i take the interior panel off. my '99 tailgate will only open if i pull the handle with one hand and squeeze the door with the other. what i do is put my palm on the top of the tailgate above the handle (the hatch is open) and compress the outer and inner panels. the door latches and locks/unlocks fine. what should i be looking at to fix this so i don't need to squeeze the door anymore?