Hi Peter, 
I know this subject has a long history, but I just purchased the CH Throttle Quadrant and was callibrating the TQ in FSUIPC and these are the values for each of the 4 throttles: 
Rev -16065, Idle -14518, and Max +16065 
Do these values look correct to you, in  order to provide reverse thrust, where available?  Am I supposed to set 'reverse thrust' anywhere else in order to achieve it?  
I have not been successful getting Reverse Thrust to work, and I have also been discussing this with Bob Church, who, you know, authored the wonderful Control Manager software for CH.  The values in CM after callibrating are: 
Detent  240;  Reverse  255;  Maximum  0 
Bob concurred that these numbers look good. 
Thanks a lot, 
Howard