NGX+Saitek pro flight yoke+fsuipc -> Reverse

Dear All,Again a newbie question: I am trying to get reverse to work on my saitek throttle. My setting works perfectly on the J41 but on the NGX as I advance the throttle from idle strange things like A/T disconnects and spoiler arms and yet when retarding from idle the reverse properly activateThanks a lot for your help,Karim