Has your Xenon bulb burnt out yet Phaserburn? I used the Nizn batteries in a stock MiniMag and each bulb burned out in only about an hour's worth of use. I would imagine the Xenon's would have less runtime since they're driven harder. Where did you get the bulbs by the way? I could not find them anywhere... only place i haven't looked is Home Depot. Oh yea... one more thing, does anybody's MiniMag AA's head wobble a tiny bit when turned on?