Well I sealed the deal this morning and will pick up my 05 klx110 tomorrow morning (new). All of my other 4 strokes have been WAY lean from the factory. I'm assuming the klx will be no different? I'll leave the bike stock for now but would like to correct the jetting right away. What is the stock main size and what MJ would some of you guys recommend for getting better fuel flow at sea level? If the jetting is spot on from the factory, disregard, but I haven't ever found a stock 4 stroke that couldn't benefit from a bigger main jet.