Thanks a lot. The spark plug is dry as a bone when I pull it out. I'm going to go get a new spark plug today - I'm using the one that was in it when I bought it, though it doesn't seem to be the correct one.
It seems to run pretty good at all speeds ... it does the 'four stroking' thing a little, but I'm trying to figure out how to make it stop doing that.
Any ideas on the lights?