I ride a 2001 KTM 200 exc on the trails. It's an epic bikes to ride but I've a couple of issues I can't get to the bottom of. First is the pants mpg. Now I knew a smoker wouldn't go far on a full tank but 40 miles to empty from a 10ltr tank! I've done a fair bit to this bike including a new piston, main bearings, crank seals (whilst doing a knackered out put shaft), reeds and a new pilot jet (42).I just can't seem to get any better than 40 miles tops. It pulls well and revs it's heart out. It's always been a bit lumpy on tick over and it has a tendency to foul plugs going down hill unless I pull the clutch and hold about 2000rpm.(that's the second issue). Any ideas on where to start poking or is this a drawback of being a smoker.