I've had ColoradoK5 as my home page for about 2 months now, and decided to jump on board. (I've blown most of my day reading messages). First, I want to ask what everyone is doing, if anything, to compensate for (93) octane unleaded fuel? I've been adding octane boost which seems to be okay, but I may be having problems because of a lead additive I've been using. I understand lead helped keep the valve-seats fresh?... but I think this additive is gumming up my carb... any thoughts appreciated. Keep on Plonkin'