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150 strokes on a 12K is an awful lot unless you are using a Chinese 12K. Even with that stone, you can try 30-50 stroke increments and test. I think getting hung up on a lot of testing can be...

I really find that the TPT at the 1K level is the test I rely on most. When right at this level, I know the rest of my process will hit almost 100% of the time. That said, the real exercise at the 4K...