Alright... starting to get a little frustrated here... changed the plug... changed the fuel line... still no dice... got it to fire, but it dies shortly after... I went to a colder plug... so I'm going to try a hotter plug (MC-59) and see if that's it.... also changed the header gasket since the other one was torn... if this doesn't work... I"m going to call Horizon.

Edit: I know it's not the fuel 'cause I started the Revo with the same fuel (pulled it out of the tank and put it into the Revo) and it ran GREAT.