First and foremost I'm new to small engine work. Bought a beat up blaster real cheap. Replaced every bushing, bearing, roller, guide, brakes, tires, etc... Tossed a fresh motor in it because the one that came in it had a chunk missing out of the bottom of the right side crankcase. Of course with the new motor she won't start. Have gone over everything and all is good. The only thing I have found is that the new motor does not have those reeds. Both are 2003 motors, but the fresh one doesn't have the reeds and the intake opening is a little wider. Did a lot of searching but not finding much on why one would have them and the other wouldn't?? I'm fairly certain it's a stupid question, but I haven't much luck in research so far and my local Yamaha dealer is backed up with work. So I'd figure I would ask on her first. Thanks in advance for any insults or insights.