I have a 02 Honda Cr250r. Looking for some more power, at the point of porting cylinder and head work. Most info I find "googling" around for info is 5-15 years old. Who currently is still sharp with the old 2 stroke and worth sending your stuff too? I see reviews on Gorr that are all over the place, Varner number is no longer in service. Pro Circuit, PR2, Williamsmotorwerx? Anyone have current dealings in this area? Appreciate the info.