Looking and looking at the enhanced images, imo i think the main bay as drawn above is too short. I think it should go further back closer to that black thing in the middle behind the wheels (APU apperture, Luneberg lens, EO housing?) and also further forward, and possibly V shaped forward, or alternatively, like i think someone drew it recently, a middle section that projects more forward than the two other sections under the intakes. There is the line right in the middle of the fuselage which i think is showing the bay outline rather than the groove (which is there too though probably not as pronounced as we might think).I just wanted to fix some past mistakes in my observations with the clearer photo. Red is the groove, yellow is what is clearly visible outlines, and on the weapons bay the yellow also is where there is a visible black seal like material similar to the the edges of the control surfaces, which points to a general weapons bay length. The orange bits are what I just made up to complete the yellow lines to form a better visual representation.
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