to bring everyone up to speed, i detailed my engine on sunday, and water got past my sealing efforts for the spark plugs. each was filled with at least 1 inch of water when i pulled the coilpacks. it was ran for approximately 2 miles with water in the wells. all spark plugs (except 1) are approximately 1000 miles old, except for n.6, which was 6,000 miles old. i have some slightly used NGKs here......do i need to change the plugs now or not?