[apaz]

Alright, so here's what I did.

alantf, I tried your advice. I cranked it up just now, without doing anything. It started up and as expected it ran for a bit, then shut down.
I then set to prime and waited 30 seconds. It then cranked up and stayed on.
After about a minute of that though, I started seeing a little bit of smoke coming from the engine, not enough to freak someone out. Please tell me that is coming from setting it to prime.
I did switch it back to on, and it ran for a bit (albeit rough).

I am going to also check the gas cap vent, but I'm not 100% I understand exactly what I'm supposed to be doing there. I think it would be in reference to section 4-1 in the service manual from here?

I also searched the forum looking for some steps or pics and didn't quite come across them. If someone sets me up with some steps, I'll take some pics along the way and upload them for future reference.

Thanks.