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Still might be possible to repair with the use of a liner like brass. It would be an interesting challenge for sure but there are some threads on that iirc.

Bob

Cracks can be repaired in quite a few cases.

Bob

I think your taking Rez and Tom's advice to do a minimalist scales on clean up is the way to go. That is especially so if you have had little experience unpinning/repining scales and doubly so since...