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So while converting to a 32t cassette, I got the b-screw stuck and was barely able to remove it. Upon inspection I saw that the little nose of the derailleur hanger, upon which the b screw pushes I guess, is damaged, i.e. part of it is broken off (pic related). Now there's no name or number engraved on the hanger, I only know its a focus frame with their R.A.T. Do I simply look for a similar form?