@DieselTechI was using a light maul and using just enough force to make a reasonable impression. I was getting the edge impressions no matter how I used it, light or harder.
@JDFredI was thinking about that, but I'm glad you did something to improve it. I will certainly try it, although I'm surprised I have not heard anyone else complaining about it. The tool, as it comes, has sharp corners. I will also see what other tool makers are producing as an equivalent.
Thanks for your replies.