well, i went to my local kawasaki dealership (there is only a kawasaki and honda in down, and the honda parts guys 90% of the time cant tell their ass from a hole in the ground, and the kawasaki guys are always real nice...hell, i took my honda motorcycle to the kawasaki shop to get tires, its that bass ackward...), to see if they had any jets. they had a large assortment, but none larger than 142.5 or so. however, they had alot of 120 take offs (they said that when they get a new quad in they take out the 120's and put in 117's or 117.5's, because [i guess its the elevation] they just bog off idle). i had them drill out 2-120's, one to 147 and one to 150, for $5 apiece. im cool with that. i know they can be cheaper elsewhere, made to 147 and 150, but i like the guys, they had the right tools and bits to drill them, and i didnt have to look all over for them. i put the 150 in, and it seems to rev alittle more freely. havent had a chance to do a plug chop, but it pulls much better. i also took off the snorkle, and i may do a cut away airbox lid, or maybe drill a bunch of holes in it.