I don't really do anything special with my Cornelius keg poppets other than soaking them in StarSan before kegging. I just ordered a new set (after two years) and I'm curious to know if you guys do any additional maintenance on these things so you can expect to extend their life and utility. I've recently experienced some leaking (both in and out) at the poppet. Which is another reason why I never leave the gas on my kegs.