Swenracer, Your photo's need to show more of what your talking about but the first thing that pops up for me is you're trying to set the door to the fender.
You set the door to the cab opening and cowl establishing the gap at the back and top of the door and the cowl in front, and go ahead and establish the latch positioning while you're at it. Mark (or drill a small alignment pilot hole) then set the fenders to that.
THEN if you have issues show some pic's of how the door fits in the cab opening and where the fender interferes.
I took my fenders off to set the doors...
