I just bought a 2002 XR650L. Gearing seems way too tall for the kind of riding I'd like to do. Need to lower the gearing for riding trails/fire roads but still be able to do 60 - 70 MPH without buzzing the motor too hard. I've heard limited information about modifying the carb/jetting and snorkel/filter/airbox as well. I plan on keeping the stock exhaust. Live and ride in PA between 500-2500 feet in elevation. Any advice would be appreciated. Thanks for reading.