I have an older Huebler that has been my main player for a while and I would like to reduce the weight somewhat. When I took the bumper off I noticed that the small plastic hex head screw that holds the bumper in place screws into the tapped center of the weight bolt. My questions are does anyone know the weight of the Huebler bolt and if I took it out is there a lighter one to replace it with? Do they make a bolt tapped like that that I could find in the hardware store? If not what would hold the bumper in place? I know I could glue the bumper but would just as soon not. Thanks.