Jon Cull or anyone else with relevant info: Can you direct me to a source for a 6v LED bulb that will "light up half the parish" and will fit the DU142 headlamp assembly? I hear that there are such bulbs that give more than 3000 lumens, but have not been able to find one. The best I found on Amazon and Ebay is 800 lumens, which is only a little brighter than a standard automotive incandescent bulb.