Crank scrapers or plate...?

famous bob said

I`m an old dog. never heard of the self clearencing (Teflon) crank scrapers ! Interesting idea, how big of "chunks?" wears off of them ?

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There is some fitting to do when you mount the scraper. I don't recall exactly how much it is you leave to self clearance but I think it's about .040ish.

Guess I could go pull the file and look at it but that's about right.