Yes when I asked haldanes for any old steel friction plates they said I could not put the quiet clutch mod on a Ducati with an aluminium basket that has the radiused slot ends. Thats bullshit....it just takes a bit more fiddling around and measuring to get the position correct so it sits at the bottom of the basket 0.5mm proud of the hub slots. I had to lose one steel to maintain the correct positrion at the outside of the hub. It seems that engineering tolerances are not that great so people have to adjust to suit.
the older steel baskets with square end slots must be an easy retrofit. Just throw the extra steels in the bottom and away you go. Griunding or filing the tangs of the steel friction plate to sit in the correct position against the radius of the ali basket is not that hard.
But hell its worth it...less noise and longer life.
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