[headshrink]

I just about have mine dialed in... for now. I haven't caught it missing an up shift, or a down shift, with the exception of occasionally not reading 1. That's not that big a deal though if it works as consistently as it is at the moment.

There are two things I found:
1) The magnet really does need to be parallel to the switches. Although perpendicular can work, I believe I had a lot of problems with it because it wasn't covering the length of the switch with it's magnetic pull... so theoretically if the switch was most sensitive in the middle, but the end of the magnet was positioned toward the bottom of the switch, it wouldn't work as well.
2) Hot glue may be fine for getting it to work, but it doesn't like to stick well to smooth metal surfaces, especially after a cold night. In the meantime, I added extra glue on the edges to hold it down, and will figure out another solution, should the need arise. I found movements less than 1mm were enough to screw it up, so I don't want to touch it if I don't have to.