Vanman
LIFE MEMBER
Vanman - pic abve has DIFFERENT cushions to ours! Less of them and flatter - maybe we have the wrong ruddy cushions!!
Although that's possible I suppose, it seems unlikely. What is VERY likely - to my mind, is that neither of the cushion pictures is correct for your van - they can't both be right and my guess is neither.
If you look closely at night position image you can see the outline of the lower bed in dashes and the shape does not correspond to the cushion pictures you've been given. It looks too much co-incidence that cushion A would make that cut in shape so I would start with that and leave D and F where they start. You're right the table doesn't move, but it wouldn't need to if the lower bed 'cut in' towards it - leaving very little overhang. If I were you I'd experiment for an hour or two.