I recently lapped a new C12k I got from woodcraft with my DMT D8C, I did the pencil lines. Lapped it in the sink with water running to reduce the sticking. It lapped flat in about 5 minutes. I checked it with a straight edge, several times. I did the corner and sides too. Has anyone else seen this phenomenom. I've heard it can take around 30 minutes. This stone was far from true when I bought as confirmed by my straight edge.

Rich