I don't know if your symptoms are those of a dying steering box but. . .
I hear RedHead steering boxes are a nice upgrade but they are mail order and I don't know your time frame. I replaced my steering box about a year ago with a unit from NAPA at about $160ish--no problems so far. Pretty simple procedure as I recall. Disconnect drag link from pitman arm, remove pitman arm, disconnect steering shaft from old steering box, remove old and put on new steering box. I did consult a writeup somewhere before I jumped in. I recall blue Loc-Tite being recommended for the bolts that hold the steering box to the frame. The only part that needed a little finesse was separating the drag link from the pitman arm. I think I held a sledgehammer against the threaded end with the nut still on to protect the threads and then I hit the side of the drag link end with another hammer and the thing popped right out. No pickle forks or ridiculous BFH action needed.
Also might as well replace the steering pump if it's at all old/suspect, and I flushed my pump and lines BEFORE hooking up the new steering gear, just used Type F ATF if I recall correctly.