Thanks for the Petzl name. It linked me to the Karst company that makes caving gear including your Myo lite head lamp and carbide lanterns. A carbide headlight would be really Retro. As to your light system, is it user serviceable. If so take it apart and go to a local bulb supplier to see if they have better bulbs that fit your system. Remember if your system is made of plastic a hotter bulb could melt it. Better to keep the old system running and go to the lighting and geekiness sticky threads for ideas. I am working on a 100 watt system.