I don't know exactly how long it lasted, based on my average, maybe 1500 to 2000 miles. I think the shop over-torqued it when they put it on. It's also possible that it's a defective frame, being a Pacific Cycles Target bike. Any way to check that without a micrometer?

Playing with the old BB, the left side (not crank) bearing ring is offset from the cartridge, and spinning it around it feels rough and make a bit of a crunching sound. I understand it's hard to judge without holding it, but you think it's more likely that I warped the shaft or ground out the bearing?

I can do a Shimano next, UN26 or UN55? Seems to be hard to find specs, but more expensive is always more better right?