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Seriously,,, there must be a transfer from either the DMT, is it old/worn, or the wet/dry.
Is this the only razor you have felt this with?

Lap the heck out of it, them Carborundums don't penetrate very deep,,,,:D

Maybe the 2000 grit transferred into the Coticule, your fingers might not feel the difference, but your edge will,,,:shrug:

It mated with a Carborundum on it's way to you,,,,:D