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The hone is warped. OP has given no indication that the razor is warped.

Either first make sure that your lapping hone is flat or else use w/d sandpaper on a flat surface.

The Norton lapping hone was never designed to lap any natural hones at all. It only is meant to be used on synthetic hones.

Yes, the Norton lapping hone has to be lapped flat--ridiculous but true.

Click HERE for an old thread about this issue. Basically you have to handle your hone the same way regarding wetting...