ramrunner800

I am trying to configure my saitek proflight throttle quadrant to use one lever to control both mixture levers of my aircraft, and to do the same with the prop lever. In both cases, I have gone to the "assign axis" box, moved the appropriate lever through its entire range of motion, and then selected the two commands I want to correspond to this. In the sim, both controls move, but they do not move in unison, which usually results in catastrophic failure in the flight. Is there something obvious I am doing wrong? Any help is much appreciated.