I've had this problem on and off for a while. I can't really figure out what is causing it. But, sometimes on start up of the rhino the stick wont spring force center. There are no simulated spring forces and Hardware trim wont work. If I enable "sticky" spring forces, the hardware trim works and all the spring forces work normally. sometimes I can get the base to "activate" the spring forces by unplugging, plugging, changing usb ports, removing power, or restarting the pc. but, Like now. none of those are working.