Hey all, I am having a bizarre issue that I can’t fix.
I am applying the fine detailing to my orc with alphas applied to my draw brush. I am getting a “stubborn seam” along the centerline of my mesh. I sculpt over the line, but it leave a noticeable seam. When I tried carving away along the centerline, I am left with a "razorback along the centerline.
It looks like you had overlapping vertices when you applied the mirror modifier. Maybe just a little bit and very small, but enough to cause a crease in this area. Maybe redo the mirroring and make sure there is no overlapping in this area.