[stansdds]

If you want historical accuracy in weapons load outs for the F4U-1 you will need to eliminate the center line hard point as well. There was exactly one F4U-1 with the center line hard point, the one that Vought used as a test and modifications aircraft. The center line hard point, initially intended for a 178 gallon fuel tank and was introduced on the following:

Vought F4U-1A, Bureau Number 18026

Goodyear FG-1A, Bureau Number 13572

Brewster F3A-1A, unknown

Use of the center line hard point on the F4U-1A for attaching a bomb rack started in early 1944.

That's right, I read about the centre pylon being introduced early 1944.
The only thing I'm not sure, is if the 178 gal. was ever used on the F4U-1 "bridcage".

The F4U-1 could not carry a drop tank either, no center line hard point.

If you study photos of F4U-1's and -1A's you will see that most -1A's have a small hook on the belly just behind the cowl flaps. This was the forward attaching point for the 178 gallon drop tank and later, the Brewster bomb rack. All F4U-1's lack this feature.