In all the talk about the pros and cons of overboring an XR400 to 440cc I can't find any mention of how the jetting will change. Can anyone tell me what the basic change from stock will be when going to 440cc? I've got a 97 XR400 with the dual taper needle and slide mods dialed in at 158 main and 60 pilot. Do they both just get 10% richer?
