After my temporary encoder disk broke and my lovely g27 stopped working again - I decided to make something solid. This beauty printed by SLA plastic with 0.01mm resolution. Used soldering iron
Fix Common Logitech G27 Problems With These 3rd Party Solutions! - paddleshift
Amazon.com: BAQI Replacement 60 Slot Steering Wheel Optical Encoder for Logitech G25/old G27 GT5 : Toys & Games