just got back from the inspection place and failed . but, it wasn't for hydrocarbons, like i expected, so that's cool. it was way high on CO. my simple thought is burn more of the fuel. i was thinking new plug wires (plugs are brand new), and maybe a new cap and coil if necessary. runs very well at current timing, so i'd love to leave that alone if possible. any other suggestions? a couple of bottles of g2p?