A variation on this theme: can I get away with having a couple less loose bearings on the bottom race than on the top race? I was being a bit careless when servicing the headset on an old Peugeot and lost count. It feels quite smooth and rides fine at the moment, just want to make sure I'm not breaking a major rule. I'd take it apart and do it again, but the threads on the fork steerer tube are very rough and it's quite difficult to tighten anything without dislodging the bearings.