Originally Posted by
RubeRad
That doesn't help. I did screw the DS in first and tighten, and then screwed the NDS cup in, and without a lip there's no definitive point at which it is 'tight'. But now I'm repeating myself...
Sounds like your BB shell may be too wide for the BB you have. There is an internal edge to the NDS cup that should abut the BB cartridge assembly. This exists whether or not the NDS cup has an external edge/flange. If you look at those square taper BBs with the external flange on the NDS cup, the cup will usually come up to torque before the flange contacts the BB shell.