Since I don't seem to have any other options, I'm looking into getting the knackered Chain Guard recreated with 3D printing. If anyone out there can help me identify the polymer that the original part is made from, I'd be most appreciative. All guesses also appreciated! William K. D <mailto:wkdenton at verizon.net> wkdenton at verizon.net 267-980-7788 cell/office