Finally. This afternoon, I laced a Shimano 6400 UG hub onto an Araya VX 300 rim, using the original spokes(It came with Exage, which needs to be re-built). I used Robert Musson's book as a guide, and the process was straightforward and quite pleasant. It brought back memories of just how much I enjoy truing wheels, a thing I haven't done much of in 30 years. It took quite a bit of tweaking, which leads me to wonder if it will continue to need tweaking. Time will tell. Tonally, the spokes all ring true, and all the same, side to side.
A side question, which I probably know the answer to but will ask anyway. A rounded nipple or two in there. Can I just release tension on those spokes and put a new one on, or do I have to release the whole thing?