Hi dc8flightdeck,

Sorry for the very late reply! I have not been on the forums for a long time. In the end I changed my rotary switches to rotary encoders they work fine but only in one direction. I have done no more but I did find an interesting read. Some one had wired a 10K resistor between switch contacts and then used FSUIPC to record values against switch positions. I have not tried this yet but it could be a way forward for you.
Let me know if you have made any progress.

Pete