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
Spread the Word - G25/G27 optical encoder by TheAnimaster on DeviantArt
Steering Wheel Optical Encoder for Logitech G25/Old G27(60 Slot)DFGT Parts Metal | eBay