just bought a BD Gemini headlight with a xenon bulb and a very bright LED built into the reflector. it seems like a really great light and the LED is really bright. its almost too bright. anyone know how overdriven it is? i'm only asking because the instructions say it is non-replaceable. if anyone has one i'd love your opinion. or even if you don't have one and have heard any negative/positive news. haven't seen it reviewed on craig's site. thanks.