Just ordered one and wondering two things if you might know...? One, what brand of batts do you run if you run non-rechargeable? I ask because I've had trouble with multiple brands corroding and damaging my lights. Granted, I've never owned a Surefire and the one I just ordered is my first, so maybe it's a cheaper quality light that is the problem. Something to keep in mind is I live in the desert where temps are usually over 100F and do get as high as 125F in July, Aug, so it's possible the batts are having trouble with the heat. Second question is, do you have trouble running your light that close to the can? Thanks for the vid and info!