I am having the same issue but using the CH Products throttle quad. I can't use the full range of the condition levers once I set them up doing the CL assignment. Another weird thing is that the two levers are at different levels when looking at the TQ status viewer but show to be identical when looking at the X-plane joystick and equipment page. Tried re-calibrating and using different levers but nothing works.
I really love the plane but this is driving me nuts. Any help would be greatly appreciated.