if a rebuild cost almost as much as new and doesn't get you new con rods and
if you don't have the knowledge, expertise and equipment to do it yourself,
add to that the risk associated with sending out for evaluation/rebuild only to find brinneling
then i'm going to guess a big goose egg.
but then again i'm a newbie. somebody show me i'm wrong.
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MC21R9N track
MC18R2J track
CBR954
CR250