In the center, the attic has about enough clearance to crawl on your hands and knees. The problem is that you have to crawl over two air ducts. Oh and did I mention that they are wrapped with asbestos? The clearance is about 10 to 12 inches. No I am not kidding. The good news is that there are wooden planks that create a kinda catwalk to crawl.
So once I had those in place I finished with the drywall and then mudded the joints. The joint compound goes on pink and dries white. Hopefully in a few days I can sand and then re-joint again. It is a good thing that most of it will be covered with the cabinets because I suck.