Not sure if this is technical or not, but when the heat is on and the switches are enabled, I can't get them to turn where I want them. For example, one switch may turn easily to right but won't move to left, or vice versa. I've used several slates now trying to get past this point. The Bahro may soon get tired of all this.

Philkb the switches will move,but it takes a little finess,<sp? and a kind of sweep motion with the mouse.
Oh and the bahro or tireless creatures thank goodness.

try with the cursor near the middle of a lever.

Update: Although I'm posting this hours later, since I was partying a bit, I used strictly the center of the switch "shaft" to which the handle is attached and they worked well, thus getting me across the pipe field.