Well, I stick behind my advise to re-test in a controlled environment. Who knows what the issues is/was.
I think at my last big show, there was some "ghost in the wire" issue. I'm re-testing the hazer again weekly starting this week. That's going to be part of my routine maintenance now will be running all foggers a few hours a month.
I'd like a better review of the AccuFog, but you know, other than your problem, I like what yo said. Most of my blasts will be short, but I have a few times where I need to shoot down. One show needs ups, across, outs and downs. Since I can't rely on a ninja stagehand to deal with it, this is my ideal solution.
Let me know how "home testing" goes.