Westex, I totally agree. I think I found the best solution....this guy named Larry installs them on kx500s and cr500s like crazy.. He is on the kxriders forum. It's $132.00, and the guys go wild about it. He welds a bung on the head and installs a decompression unit, then makes sure your head is still flat ( he can cut your head while he is at it) and media blasts it. I think that I will be sending my head to him. IF you go to the forum just read how happy everyone is. I like the accu products handlebar lever...... but he puts in through your cylinder, and to be quite honest he (the guy that deals with you) wasn't the nicest guy on the phone. He was sort of confrontational about it like he was the only option and putting it in the head is not the way to go. So I'm thinking a leak is a leak, and it seems to me the closer to the spark plug the better.