ICE,
I ave just had the exact same problem to try and cure stutter on the slider axis of the throttle...
The Throttle has to plug in to the PC directly, not through any hubs etc... it has a similar issue when upgrading firmware, it has to be plugged directly into the PC to work... did this last night, and the LED lights work as setup in Target after a restart...
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"The engines are overheating, and so am I!!, we either make a move, or blow up!, So which is it to be?!"
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"It is better to keep one's mouth shut and be thought a fool than to open it and remove all doubt."