Well, my 520 is all finished. I took it for a spin downtown and back this morning--about twenty five miles or so. I'm really loving this bike. I wanted something I could take for long-distance rides that cover asphalt, dirt, and gravel roads--and this fits the bill perfectly. I will be installing some Kool-Stop pads for the old Dia-Compes, as the braking efficiency was shockingly poor--even after freshening-up the rubber with sandpaper, etc.
I'm also considering keeping my Trek "RocketBoys" Concor saddle on it. I kind of like the way it looks there.