Hi all, I just purchased my first dirt bike in December. A 2001 CR 250 with an original top end. I come from a downhill MTB background and am loving this new toy. Great training and covers a lot of ground. Calling it my "XC" bike. Anyway, I've been getting horrible mileage (~10 mpg) and excessive 'splooge' out the tail pipe. Low end power is crappy too. This is what got me researching and made me decide to try a few things. First I rebuilt the carb with the Moose rebuild kit. This didn't seem to help anything. Before and after the rebuild I had the carb set as follows (stock/as recommended by Procurcuit aside from clip position and float height): Main: 420 Pilot: 35 Needle 6BEH1-73 set at 2nd from most lean position. Honda/Procurcuit recommend one clip richer. Air Screw: 1 3/4 turns out from fully closed S7 Needle Jet Float Height: 17mm (Honda recommends 15mm) The variances from what the manual suggested were my efforts to run it leaner. Seems to make not much difference. Now I am in the middle of my next swing at the issue, which is to: -Repack glass in silencer. -New wet-side (right side) crank seal -New stator side (left side) crank seal -New Wiesco piston -New spark plug -New reeds The old reeds look good except for one corner. See pictures. Anyway, I'll post my progress and solutions/results. In the mean time does anyone have any theories on why this thing ran seemingly rich? Cylinder Off. Looks pretty good, eh? The CRV is diiirrrrrty. Any advice for cleaning this? I'm guessing take it apart and degrease? Reeds, check out that corner bit. Could this be a partial cause of poor mileage and dripping splooge? Best picture I have of the CR now, with the downhill bike in front.