I had mine nitrided also and other than the excessive casting flash on the sides of the lobes (whole other mess, which comp eventually took care of and I was delayed by 4 weeks) the coating on my cam still appears to be on the lobes it just looks a little polished now. When I saw your pics I thought I hope he sends it back just to be on the safe side. If you got lifters Id check the faces of them especially around the edge. I spent hours dressing up all of the burrs/nicks. I was leery that the burrs would grind into the lobes. Plus I had all kinds of dried muck inside of the lifters. Had to clean that out there again didnt want to possibly clog up the edm oiling hole. I think this will be my last dealings with Comp.