Just bought a 1970 Mach 1 and driver side door you have to slam to get it shut - if window is ups all the way even harder. Car has been restored (new pans, frame rails etc.) but doors are original. Latch and striker look good. Door all appear to line up nice. Any suggestions?
Try this: Lift the door up by the door handle. Then shut easily. If the door comes up when you lift up, the hinges are worn. You either have to replace the hinges or get oversize hinge pins. The oversize hinge pins are less expensive,but if the hinges are severely worn you will have to replace the hinges. The striker affects alignment when the door is shut.