Join Date: Aug 2005
Location: Pittsburgh, PA
Bikes: '''96 Litespeed Catalyst, '05 Litespeed Firenze, '06 Litespeed Tuscany, '12 Surly Pacer, All are 3x8,9 or 10. It is hilly around here!
Mentioned: 13 Post(s)
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Those seal rings had to be installed oriented the proper way. There is a little lip on the outer edge and, while i don't remember which way it had to face, only one way was correct. Try turning the seal over and see if it helps.
BTW, I had that exact headset on a '92 Trek 1420 as a replacement for the OEM Tange which wore out and brinelled in 4000, miles. The HP-6400 lasted almost 20,000 miles.