Random MTB people complain that the splines are very soft and loose sprocket cassettes chew up the splines a lot...but nobody said they need a special cassette...hmm.
What is keeping the smallest sprocket from fitting? Is the stack of 9 other sprockets/spacers too thick, keeping the 10th from engaging the splines, or does it just not fit on the end of the fh body, even with no other sprockets in place?
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