Mapping keys on a keyboard is frought with headaches. Really its a testiment to the good code writers at AH that their commands map so nicely, and usually without any problems. Mapping with 3rd party software, like SST, can boggle your mind. It tooks me weeks to get mine straight.
I find the interface for key mapping pretty bad. It never detects the key I press, and doesn't support foreign keyboards. You have to make the foreign keyboard to US keyboard translation manually
Choose the function, click the key on the pseudo keyboard, apply, and pray you did the conversion right. Reminds me my Atari ST games. I wish AH supported foreign characters also !
On topic, when you toggle zoom mode, you toggle the point of view angle right ? if you zoom out at maximum while having zoom mode activated, your POV angle will be the same with zoom on and off, leading you to believe that the zoom isn't working. Try zooming in both modes, just a hint. I hope I have been clear