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
Installing weights in the Logitech G502 Gaming Mouse - YouTube
Logitech G502 Hero & Lightspeed Review
How to Install Weights in the Logitech G502 Gaming Mouse - YouTube
How to Adjust the Weight of a Logitech G502 Hero - iFixit Repair Guide