Fuel wash can cause scoring. Not saying that it happened, but it is a noted symptom of unburnt fuel, excessive fuel, etc.One thing that concerns me. When I pulled the plugs they had a very strong gas smell. Is that because the engine had last been idling while troubleshooting the cricket noise? I hadn't ever noticed something like that before when pulling plugs. But I also have idled a vehicle for a while before pulling plugs.