Sorry to hear that -- all the more so because I'm fairly certain he makes a real effort to avoid doing just that.

I know he tries. He just has a tin ear for dialog, and it's particularly bad when it comes to distinguishing characters/regionalities/nationalities. I had offered to help, but made the mistake of starting off catching up on the series reading mss that were already copyedited and approved and no longer fixable. Open the first of these, and on the first page, in the first paragraph, in the very first ever-loving sentence he's got an American woman using nail varnish. I plowed on for a while, but the errors just kept piling up and I just didn't have the heart to go on, knowing that there was no way to fix them.