As you've found, when you get the frame straightened, you need to hang the other panels on in that area before you unstrap off the rack. The rails can be in spec, but the upper structures can still be out. You need to hang whatever goes on in that area and do additional pulls so the attaching parts will line up side to side, forward back, diagonal etc. In your case: fenders, hood, grille, bumper, valance, check fender to door fit, fender to cowl. Lots of extra tweaking needs to happen after the main frame pulls.