Originally Posted by
helpless
I don't know how tight 'snug' is, so I screwed the right side in by hand until it contacted the BB face, then I tightened it slightly with a wrench.
That should be enough. The right cup's lip is a displacement guide, in that it serves as a reference stop for the intended chainline. The tightening of the left cup to spec should ensure that the system is "bound" together correctly, as the engineer designed (hopefully there's engineering, LOL).
Originally Posted by
helpless
What should I do about the unfortunate chips of paint around the edges of the BB shell? I imagine I need to get some paint on there so rust doesn't cause more paint to flake off. Facing and chasing sure seems like a primitive way to install a BB.
If you have a steel frame, a few dabs of touchup paint wouldn't hurt.
Facing and chasing the BB shell isn't really that bad. Getting the parts to specification -- ensuring "squareness" of mating surfaces, threads clean and dimensionally correct -- is pretty standard in machine work. More conscientious manufacturers perform these at the factory/shop but the suite of frame prep work can be done with the correct tools in a couple of beers' worth of time (assuming the frame isn't messed up to begin with).