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Try one lap with magic marker ink on the edge and no tape.
You should see a thin ink line.
Next add tape and all the line should vanish.

This is one place where a cats whisker or hair can let...

Without watching three hours seems way too long.

Hone for five min a grit only (average).
Use a light touch...

Strop with care. Light and smooth...

The magic marker test can often tell...