It all depends on which time frame you are modeling. All Navy Acft had the star-n-bar on straight wing acft perpendicular to the fuselage. When they got swept wing acft they kept them the same way. The delta wing of the "Ford" was also perpendicular to the fuselage, in its early years. In 1955 the Navy said all wing markings would run parallel with the leading edge of the wing, resulting in the angled markings. So pick your time period and don't worry if it isn't correct because the Navy didn't change them all over night.
Berny
Phormer Phantom Phixer
On the bench
TF-102A Delta Dagger, 32nd FIS, 54-1370, 1/48 scale. Monogram Pro Modeler with C&H conversion.
Revell F-4E Phantom II 33rd TFW, 58th TFS, 69-260, 1/32 scale.
Tamiya F-4D Phantom II, 13th TFS, 66-8711, 1/32 scale. F-4 Phantom Group Build.