Hi, I'm new to the 250r world been riding a 06yfz450 which I just traded for a 86 250r w/ a raw esr330 4mil stroker with 5hrs on it. All the work was done by Hybrid Engeneering. So I guess if anybody has any info they can give me on what to watch for, what kind of maintenance I should do, what kind of fuel to run and mix.