You can alter the original hammer (?) notch fairly easily if you are patient and good with following instructions and watch what you are doing. On rimfirecentral there is a description of how to do it using a vice and a drill bit to allow only the right amount of material to be removed at the right angle. It works. There is a description in the sticky's above showing other good 10/22 mods like the auto bolt release and the jb weld trick. You can also buy a valquartson or pc custom hammer for inexpensive and swap it out and get the lighter trigger that way as well.