Hi I recently bought a 1993 Yz 80. I was told that it has a big bore kit on it but I don't know what size it is. My bike usually bogs in the powerband but sometimes it runs good. It usually runs good in lower temps. I'm mixing my bike at 32:1. My pilot jet is #40(+5 than stock) and my main jet is #270(stock). I'm told that it can run good with 93 octane fuel. What do I need to do to make my bike perform perfect. If I put a bigger main jet(ex. #280) will my bike run better.