Just recently I bought a Cold Steel Tiger claw folding karambit. Fine knife, but it could in my opinion use some mods. It does not wave very well, so I intended to do a cut in the back of the blade. This would also reduce the widht of the blade which in my opinion is excessive.
http://s882.photobucket.com/user/Hfinn/media/20170605_140004_zpsj5lbqz90.jpg.html
http://s882.photobucket.com/user/Hfinn/media/20170605_140004_zpsj5lbqz90.jpg.html