Wow, it's usual to have to source an ultra thin wall socket because the plug well tapers and NGK plugs have their hex flats further down the plug body than oem Champion plugs, so the plug socket fouls the taper before you can fully tighten the plug. My Halfords socket fouled
I didn't say Finm had the smallest Willie from what Chiz told me, but I think my plugs are probably standard
