First wheel went belly up; stopped responding and just displayed the 8.8.8. Additionally, it had the off center issue. Didn't bother me while racing, but still another issue worthy of replacement.
Second wheel, which was a step back since they sent me a beta wheel. One of the mounting plates inside the wheel was loose and floating around inside the wheel. Who knows if it caused any damage to the internals. But I was unable to mount it to my cockpit, and since it was a replacement I wasn't going to take any chance with internal damage.
Each time I included either a video or pictures with my RMA request. Each time there were no questions asked and a replacement unit shipped as soon as possible.
My first set of pedals never held calibration. If I wanted to use them I needed to calibrate them each time I wanted to race. Very inconvenient. The new electronics that they sent were to fix the throttle/clutch issue.
Like I said, they may be slow in responding, but they will take care of you once they acknowledge your problem.