I just bought a TLR-8 to hang on my P10C to use as a carry gun. This light is bright and still tiny. During the installation, you need to install a c-clip on the end of the cross bolt. I can't get it on. It comes with a little tool to help with installation. I haven't been able to make it work and the manual is no help. My Google-fu skills are also failing. Can anyone help.