I checked everything out today. The carb and the fuel line were clean as could be, the plug is firing, and the clutch is grabbing very well. But it still won't fire up. Can you tighten the clutch too much? I got pictures of a few things and are downloading them now. I'll just post them with a title of what's there, and you guys can comment as necessary if something doesn't look right cause I don't really know any better and everything looks all right to me.