Prior to the upcoming cross country trip, I decided to change the plugs in the Warrior we bought last month. The first three I got out were ancient Autolites and the electrodes were practically gone. The next were NGK in fair shape, broke two boots getting them off so I put on a new set. First test fire, and wow! It sounds like a whole different engine! Put new belts on up front for good measure and testing the spin on the unloaded components and I think we're good to go. My only remaining concern is that after a 600 mile break in trip, the radiator fluid was quite rusty. I drained and flushed, assuming that this would be the norm for a unit that sat for a while.