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
How To: Replace Logitech G25 Optical Encoder Disc (Part 2) - YouTube
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60 Slot Steering Wheel Optical Encoder for Logitech G25 Old G27 Driving Force GT | eBay
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Games Logitech G27 Racing Wheel | Logitech G27 Game Steering Wheel - 30 Logitech New - Aliexpress