hey guys i have an 97 m2 and i think the transmission is goin out. in the middle of driving home the other night the bike started making a real loud knocking noise like some thing was dragging the ground so i stop and the muffler is on and nothing seems to be wrong on the out side. I can change gears and accelerate but as soon as i decelerate without the clutch being pulled in it makes a horrible knocking noise. Any ideas what the hell this could be ? Also i noticed that here seems to be oil on the drive belt, and leaking around the part where the belt attaches to the engine.