Stock 2004 motor running 410's in the mains. Can get around 40 miles before its time to fill up...ouch! (Not on a super deep day, we're talking about relatively hardpack snow, but not trail riding) Any ideas? There are no leaks in the tank or fuel lines. Tank is a factory 10.6 gallon tank. Riding around 6,500-8,000ft. Any help would be appreciated!