A friend of mine just bought a 2006 450 and the clutch felt like it was dragging even when it was disengaged... i.e. hard shifting and bike would lurch forward as it idled down. We pulled the clutch cover and the clutch is dry. He changed the oil and the level is correct. The previous owner just rebuilt the motor and resealed the water pump, so he may have had the right side cover off. My question is what would keep the clutch from getting oil? He has put a couple hours on the bike and, I think, would have blown it up by now if the oil pump wasn't working. Any ideas?