You can have them open or closed being separate parts.
Done a bit more....as this is a closed up bird no time necessary on cannon bays, so both nose panels have been fitted in place after plenty of shaving and sanding of edges to get the best fit possible, actually better suited to being open than closed......the main problem this provides me with is a gap right up front on the nose cone.....note, if you open the cannon bay doors you can move the other panel forward and close the gap, problem solved.
At this point I have removed the nose cone so it can then be reattached flush, as you can see it does not match up.
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