Alcor TCP can be added to the fuel to reduce lead build-up on the plugs. Adding "Lean Aggressively" to every possible phase of your checklist will work as well or better. Hauling unleaded gas isn't an ideal solution, but it saves me from having to clean my plugs. If alcohol-free unleaded is available in your area, and if you can get a mo-gas STC for your plane, it's the only way to eliminate lead balls in the plugs.
