Could I port my carb.? If I could, what would this do? Would it just give me more air/gas flowage? What else could I do to my carb to increase performance on my green machine?(89'kx125) Maybe I should go and buy a radvalve and performance reeds? What reeds do you suggest? I want topend, I want more mid-top..Since you can't really increase the bottom end power of a 125 no matter what you do...:o I don't know if I really need power, it did put out a lot of power, but then the clutch started to slip so I started to think that I was burning my top end...When I re-do my topend, should I bore it? And how much would it cost me to do this? Also when I bore it, what else do I need to do? Like any head work? If I ship my cylinder off to Eric or some other company will they supply with the piston, ring and all those goodies? I might just invest in this pretty soon...Thanks for your help.