Thanks for helping with this one.
Installing a UN-72 (cartridge style) BB. As I tighten the cups, the spindle gets noticably griddy. I'm guessing that the BB shell is not square and is tweaking the flange on the drive side cup resulting in misalignment of the bearings with the spindle. I had always guessed that facing is important for loose ball BB and not as important for cartridge style BB's. Am I out of my mind?
btw: the frame is not of quality manufacture