Cheap fix for Logitech G603 Scroll Wheel issue - YouTube
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Unboxing and Review of Logitech G603 Wireless Gaming Mouse | UnbxTech
Amazon.com: Mouse Feet with Mouse Wheel Encoder for Logitech G403 G603 G703 : Electronics
Amazon.com: Logitech G603 Lightspeed Wireless Gaming Mouse, Hero Sensor, 12000 DPI, Lightweight, 6 Programmable Buttons, 500h Battery Life, On-Board Memory, PC/Mac - Black : Video Games
Repair Parts Mouse Encoder Wheel Scroll Click Switches Board for logitech G603 Mouse Wheel Board|Mice & Keyboards Accessories| - AliExpress