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linen and leather.

Stroke count? look at the slurry- when it looks like there is enough dull mixed in with it start washing it. (dull has a gray/blackish tint)

It wouldnt take a few minutes to L-n-L and see whats shaving. Thats the best way to tune a test.

if not working i would think go back with a good session in light slurry then water and maybe not...