Dave,
Thank you very much for your insight! We added a ~1.5K resistor to our 10K pots, and they work a lot better now. (full range of motion w/ full range of values).
We discovered yesterday that our slider was actually not linear, it was logarithmic. (WARING: If your buying from a "surplus" store, make sure you are buying a linear one (you can check with a multimeter)).
We found another one @ mouser, so that should be ok.
Thanks for all the help from everyone!
