Eric, I have some questions about porting. I have a '96 YZ125 that has (as you know) case reeds. If I were you have you port my bike would you port just the cylinder, or have me send you the whole engine? If I just sent you the cylinder, would I be short changing myself as far as power gains? Also, how does my bike/year respond to porting? I don't know where I would need the power bottom or top so, in your opinion, where would my engine/year benefit the most? :think