Okay, I'm really getting close to re-posting M1 and M2, I really mean it this time, and after that I'll throw out M3 and M4. M5 and M6 may be a while, y'know?
Anyway, I decided I'd re-read the whole series to make sure I didn't go off the tracks on M5, and I just noticed that I mis-spelled the name of Sam's home town the first time he mentions it. Seven paragraphs in. It's spelled right the next two times, in the following paragraph. Fine. 'grep -rn Atalla *' only found one other place, in the most-recently completed chapter of M5, so that's it. It's Attalla everywhere else, like it's spostabe.
Still... Me going over this stuff a million times to make sure it's perfect. A half-dozen proofreaders. Twenty thousand downloads. And no one noticed that I mis-spelled a city's name. We're all blind.