Most 1 inch threaded yokes have a groove in the threads that accepts a lug washer. This headset does not have a lug washer - I used a washer from my old headset to keep the cup and locking ring from moving together. The key to the headset's performance is the bike's steering column. Does it have two parallel faces at 90 degrees to the pipe? Then the cups should sit nicely. With an inexpensive headset, the steering can be great. It won't look great, but if set up correctly it will work great. There are bike shops with a head tube metal shaving tool if your head tube requires it. A cheap bike will probably do, but the expensive ones seem to need some work.
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