Does your G502 feel too heavy? Try placing your weights as shown (now including Lightspeed!), it alters the center of gravity so it feels lighter. : r/G502MasterRace
Logitech G502 Hero & Lightspeed Review
Logitech G502 Proteus Spectrum RGB Tunable Gaming Mouse, 12,000 DPI On-The-Fly DPI Shifting, Personalized Weight and Balance Tuning with (5) 3.6g Weights, 11 Programmable Buttons - NWCA Inc.
Logitech G502 Hero High Performance Gaming Mouse w/ Original Weights 97855141996 | eBay
Amazon.com: Logitech G502 Hero K/DA High Performance Wired Gaming Mouse, Hero 25K, LIGHTSYNC RGB, Adjustable Weights, 11 Programmable Buttons, On-Board Memory, Official League of Legends Gaming Gear - White : Video Games
Logitech G502 Lightspeed Review: The Perfect Gaming Mouse Goes Wireless
Installing weights in the Logitech G502 Gaming Mouse - YouTube
How to Adjust the Weight of a Logitech G502 Hero - iFixit Repair Guide