coopertom on Twitter: "I found the culprit! A cracked optical encoder disc. This is why my Logitech g27 steering wheel is losing calibration http://t.co/Kvpyejyf3e" / Twitter
Logitech G27 off center (a few degrees). Possible fix? | Reiza Studios Forum
How To: Replace Logitech G25 Optical Encoder Disc (How To Fix Your Broken Logitech G25) - YouTube
LFS Forum - G27 Broken Wheel Position Sensor
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How to fix broken Logitech G27 or G25 optical/rotary encoder for 10 cents - YouTube
Adventures in newer (optical) pc steering wheel hacking
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