ive gotten a lot of help on stuff here over the years so i wanted to post a money saver that i came up with. my local shop priced a valve tool for my crf 450 at 150 dollars so I made my own which is pretty simple to make out of a 5 or 6 inch C-clamp. It cost 15 dollars at my local True Value hardware store. I just used my oxy-acetylene torch and cut the head into forks and thats it. use a wire wheel to clean up any leftover slag. simple as that. please let me know if this was helpful