I am turing 16 in 3 months, and I am going to apply for a job at my local yamaha dealer. I have been riding dirt bikes for 7 years and I know all the basics about dirt bike mechanics, but I don't think I know enough of the more advanced stuff. I know about changing levers, oil, spark plugs, cleaning filters, and changing tires. But that's about it. Any tips and further information about dirt bikes and other Yamaha products?