mj2001:
I did a series piecemeal and somewhere around part 8 a couple of readers pointed out logical flaws and contradictions from the first few episodes.
That's why I hate posting something (either as a long story or a series) until it is done. There have been too many times when I'm getting near the end of a story when I suddenly have to go back to near the start to insert an element for me to post without having the story finished.