I'll make an assumption that you installed the non-drive side cup first. That's normal procedure. As I recall, the drive side should be torqued to about 25 ft/lbs. for most cartridge If the bottom bracket isn't quite as wide as it should be, when you tighten up the drive side with the non-drive side in place, you can put a bit of a bind on the bearings. To test this out, back off the non-drive side cup to see if things loosen up. If so, you have a couple options. Put some teflon tape on the non-drive side cup and leave it backed off, or obtain an appropriate spacer. I've experienced this with cartridge BBs.