I rode YZ 250's for years in the deserts of California and they worked fantastic there. Now I'm based in the jungles of Thailand, slick clay, tight 1-3 gear singletrack, roots, ruts etc. Thinking of 250 two stroke again but it needs to be loads more mellow than my ported YZ of yore. Rode a friends YZ250 with a FWW and ignition timing retarded. it still hits too hard to hook up over here and he sold it. A friends Husaberg and anothers KTM 300 on the Yellow spring powervalve are loads more controllable. Sooooo what else can be done to tone the power delivery down? I'm thinking something like a Vortex ignition to completely adjust the ignition maps to what i need but I find very little info on them in the YZ forum. Has anyone had luck with the Vortex? What else can be done to tone down the delivery? My YZF 250 makes the perfect power delivery, how can I turn a YZ 250 into 250F like powerband? I love the flick-ability of the two strokes.