I'll try flipping the retainers (or at least look at them again, to see if flipping would make any sense), but I'm pretty sure they're in correctly. I may buy new (loose) bearings after I've exchausted everything else.
But I'll have to pull both of my big toes out of the retainers first
Originally Posted by DannoXYZ
Could also be they substituted another top-race from another headset and the adjustable cup doesn't quite fit it properly... or the crown-race...
This is something I'll have to look at. The fork and the headset are both original, so I doubt this is the case, but that fits the symptoms. The play is at the bottom race, not the top race (and this bike has a 21cm head-tube).