There is some play in an ISIS BB that I can't eliminate. I pulled off the crank arms and tried to tighten the BB cups. They were tight. I tightened down the crank arms and there was still some play. These things aren't really serviceable so I take it that the only fix is to buy a new BB.

Still I'm a little surprised. First, this is a newish BB without a lot of miles on it. This is the 2d ISIS BB on this bike; the first one died when it was fairly newish as well. Second, there shouldn't be any play in this right? The BB turns nicely. There is no creaking noise when I ride. But there is clearly side by side play in the BB. What gives?