hi, i have a new 03 rinny(had it about a week), i live, play, and work at about 7000 feet and the dealer (also at about 7000 feet) did not put the high elevation jet in it, his idea is to ride at a lower elevation, i think the lowest elevation in southeast utah is about 4000 feet. if i add a k&n filter and pipe tip mod, do you think i would still have to rejet? ive done the carb adjustment and that made a big diff. (tha lowest i would go on it would be about 6000 feet and up to about 11500 feet)