So I FINALLY got around to taking my tractor into a dealer on the loader problem. They messed with it for a while and said it had no problems. I told them to keep messing with it. So as I told them they drove around with a load in the bucket for a while and let it set. They came back a little while later and it had dumped its load on the ground. They determined it was a bad loader valve. Agco had them do a bunch of tests including "rebuilding" the valve which didn't work. They replaced the valve and supposedly the loader stayed up all weekend. Pick it up tomorrow. We will see I guess.