Re: KM purge valve problem
i would go get the finest dermel grinding stone you can get that is either one of the pointed bullet shapes or the cylinder shape. you can usually get one of the little rectangular stones that come with the dermel stuff that you go "wtf is this". it is used to shape the grinding stones. shape the stone (by chucking it up and spinning it with the dremel) to shape into the shape of the bb, grind out the bb's seat and that should do it. this is the best solution. not to bash anyone elses suggestions but the other ones are a bit to ghetto even for my tastes and can ruin stuff.