I was attempting to follow Paul Seller's sharpening method which results in a convex bevel on the plane blade. I think what ended up happening in my case is that with repeated sharpening I inadvertently increased the curvature of the convex a little bit each time. It got to a point where I could reach the edge of the blade anymore without increasing the angle excessively. Now I'm trying to grid it back flat using a honing guide and it's taking forever . Is there a trick to avoid this?