Yeah, I checked that. There are four pins, and it would be easy to accidentally turn it a quarter turn, and who knows what it would do. There is a little dot beside one of the pins, and I know that that pin has to be next to the little switch.

Not exactly sure what the problem is, but whatever it is, when I had the blade holder off, it worked fine. Soon as I screwed the BH on, it went all goofy.

I'll figure it out.