Triplecrank92 Don't these 7402 still have Dura Ace's seperate pull ratio? I don't recall when or if they ever changed it but I know at one time Dur Ace RDs would only shift with Dura Ace shifters and vice versa. The typical shimano plan was to keep people to from buying a 600 or other bike and upgrading to a DA RD or more importantly keeping manufacturers from putting a DA on an otherwise 600 equipped bike. I think you just have aparts mismatch Check Velobase and Disraeli gears
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