Hey, Koykermfg and all the others who offered advice: I got an expensive oring kit for the loader control, but I haven't had the time to install it. Today, I decided to drill some post holes that I needed, and then to take the tractor to the shop to tackle the valve. It still didn't work (the loader, that is) BUT after many up and downs with 3 point hitch working the auger, the loader once again worked fine. So- you guys were correct, and I didn't work the 3 point enough to unload the hydraulics. Next time, I will follow smarter people's advice from the get go, before I waste money! Thanks again.