I have a 12v box light that I use for coon hunting. It adjusts from a walking light to a spot. The walking light is good, but the spot beam doesn't get very tight. I tried a diamond reflector and tried to replace the head with an old wheat head, but neither worked out. It currently has a mine 5100 style head on it. Just curious if any on knew of a better head to try or have any other ideas? Thanks for the help!