Originally Posted by
Dave Mayer
Hard to see any problem looking from the side. From an earlier pic, you do have the correct 7/8 speed first cog. It is stamped on the outside of the cog. The second cog has a built-in spacer, which is narrower in the 7-speed version. Maybe this is the problem: you have the wider 6-speed
#2 cog.
Of course, for the rest of the (loose) cogs, you would need the correct (narrow) 7-speed spacers.
The side view was too perfect, still can't see how many threads are over-hanging the freehub body.
The spacing of the cassette looks correct to me, normal 7s cassette.
From the freehub part number in the axle dust shield you can ID whether this is a 6s or a later 7s Dura-Ace freehub.