New here, hope this might help. We have a 2010 Lance 850 that also uses a separate piece to make the dinette bed base (not the table). This is stored in the overhead cabinet when not in use.
We bought a wire closet rack and installed it about 3 inches down from the ceiling (a little over the thickness of the table and leg support piece) in the overhead cabinet and keep the filler board there during the day. At night, we let the overhead cabinet down (the front completely open) take out the filler board, put the table on the wire rack (which will not now shut due to the table width) make up the dinette bed, and use the open overhead cabinet to put clothes and stuff on that we take off and/or will be wearing in the morning.
The rack is just attached at the sides and along the back with no support arms along the front. The filler board is very light up there for traveling and this has held up well. The table itself is heavier but, when stored up there, we are not traveling.
This takes up very little of that cabinet's space and leaves the storage area free of braces or laying the filler board on top of stuff.
