I'm really starting to wonder if the T-2 on my HD gun has an electrical issue. I was playing with it tonight and noticed how dim it was, so much so that I couldn't even see the dot in normal indoor light unless it was on 7 (and that was barely). Seeing as how that's the third non-NVG setting I started to wonder about this sight, again. I feel like I have to replace this battery every six months, if not sooner. I just replaced it in November I think, I'm trying to find the thread where I posted about it on here. In the meantime, what settings do you guys keep your T-2s on? Right now, I have it on 10, which is the lowest I'd be comfortable with when activating the WML (M300C). I don't see how so many people can make it a full year before replacing their batteries, much less two or more.