Thanks guys.
The white nose band on the skin ends at the leading edge of the engine access panels, which seems the logical place for it to do so. It is possible they painted part of the side panels white too, but I don't think so looking at the photo. I reckon it is just that the screenshots I took show the aircraft from a rear aspect whereas the photo is a frontal aspect shot.
I've got one more Corsair skin to do, an F4U-4.