Yeah, I'm not worried about the bearings. Well, not yet, anyway. I figure they're good or they're not, and there's nothing I can do about that until I clean them off and inspect them. I'm just concerned about the amount of crud that was able to collect in there, and that it might mean that I'll have to be servicing the bottom bracket more often. But maybe that's normal, and the rest of the bottom bracket assembly keeps the ball bearing from being exposed to that stuff.