Speaking of headsets, here's another question......
Do you really have to use the washer with the tab that comes with most headsets, or is it safe enough to just use a tabless spacer instead to avoid damaging your threads later when you remove the lock nut, as this seems to happen a lot as the tab will tend to jam against the threads and mess up things when it tries to turn with the lock nut. It has not happened to me yet, but the next headset I'm about to install (A Miche Primato with needle bearings) has the smallest, rounded edged tab I ever seen on a headset washer and it seems like it's eager to mess up my steering tube threads. I'm really tempted to just grind off the vestigal looking tab....

Chombi