Good Morning All. Bob is familiar with my services. I have worked with him before. Ham-handed sanding is done off the gun most of the time. People think that it saves time to do it that way and then they won't have damage to the metal from the sand paper. Careful masking of the metal surface allows "on the gun" sanding for a professional job.
I read often and post less these days. I enjoy learning new things which I find happens often on this site. And Bob, yes, it can all be made to go back to "acceptable levels" IF you want to.