I have a smaller carryall with sides that I’d sell if you want to drive to NC. Perfect fit for that tractor.
Looking at the pics again and I noticed that you have a cover on the pto shaft and that cover has a hole in the end. If you haven't already I would suggest you pull it off and check for corrosion starting on the shaft. Then grease it up well including putting grease in the cover and wipe off what squeezes out.
You need to lower the brackets where the lift arms attach by quite a bit. The top link could be made longer and that would level it out some. Personally, I would lower the lift arm brackets a lot. Frankly, I see no need to be able to lower the carryall all of the way to the ground. I would try to set it up where it's about a foot or more off of the ground when the lift is all of the way down. The only downside of that is you will need to block it up, when unhooking it from the tractor. All a carryall is really, is a small platform for hauling stuff behind your tractor. I would set it up, where it will be level and have ample ground clearance at the same time and leave it right there, for use. There is only one height on a three-point hookup where the carryall will be level, unless you adjust the top link, and you want that position to have good ground clearance for going over rough ground.
Where in NC? I been talking myself out of a carryall for over a decade. Maybe if the price is right? Well who am I kidding with the price of gas these days and the closes part of NC being 2 hours from me and most of it lieing at least three hours from me and possibly several more hours into the state from that it quickly becomes more than the cost of buying a new one at the closest agrisupply! Haha