Came within a gnats whisker of RMA'ing the X55.
Rudder (I don't actually need it due to having pedals) was spiking like crazy and reporting less than 10% displacement.
Throttle #1 was not registering 100% full throttle and was out of sync with throttle #2.
No way to calibrate either issue out so out came the screw driver.
Throttle was a case of loosening off the gear wheel carrier, rotating it 2 teeth and re-tightening.
Now reports correctly.
Rudder was a little harder to track down cause and correct, I checked internal (to base) wiring for chaffed or loose wires, no joy.
It then occurred to me to detach, clean the contacts, and re-attach the joystick handle, now works perfectly.
Had a 'mare with the software when I tried to uninstall it and re-install, found the USB (including hidden) device deletion and registry cleaner worked a charm.
Finally I can now start to learn what is where and see how well the Rhino and I can merge