1992 Dakota. The wipers have about a 3-inch variance when parking, and when operating, the left blade often goes past the edge of the windshield. The windshield was replaced 2 months ago, and the shop set the arm on the pivot so that it parked about 2 inches above the cowl. Over the weekend, I reset them so that they park on the cowl. The problem seems to be in the drive link assembly; where the bars connect nearest the right-side wiper seems loose. Is there a way to tighten it, or will the whole assembly need replacing? Also, the intermittent function occasionally doesn't work properly. The wipers will stay on, sometimes just swiping twice, but more often 4 times or more. I'm guessing this is the module (or control unit, or whatever else it might be named), under the dash just to the right of the steering column. But if it might be something else, I'd like to know, as this item doesn't seem to be stocked at the local parts stores. After I replaced the blades in May, each has tried to fall off. I was able to snap them back into place before losing them. These are Napa blades, bought at an outlet store. I'd previously been using blades bought at swap meets; they gave me no problems. Not sure if I didn't snap them on right, or the loose drive link is the problem, or the brand isn't right for my application.