There’s a new member in our karting forums that seems to know his stuff about brakes. Karters often disregards brakes as an important performance factor and only attend to them when they feel completely wrong or stop working completely.
The thread already has a lot of info such as the correct way to bed-in your brake pads (which is critical for brake performance).
If you’ve ever had any questions about karting brakes head on to the braking thread and ask away.