hi, I just brought a 2002 kx125 with a pro curcuit platinum pipe and pro circuit race sound 305 silencer.I am using the br8eix plugs and motul 800 premix oil.I have been told that i should use just stardard fuel 91 octain rather than 98 octane fuel because apparently these bikes dont run good on 98 octane fuel.what fuel do you guys reccomend and why? thanks simon P.S please email me your response to fullbost@hotmail.com