I'm curious how often and under what conditions y'all replace your brain bucket? I'm not talking about replaceing due to crash damage but when it's "worn out." I have ben using a Caberg Gara for a while now. Somewhat off/on but I've sported it for a few multi-day trips as well as daily wear over the last few years. It doesn't feel sloppy loose but I have noticed that it's getting damn loud. What are your criteria for getting a new lid? What do you do with your old helmets?