My HR had the same problem........My DW had to make a running jump to get on the queen size bed in our "Gas powered" coach so I removed the bed support and cut 6 inches off of the top of the support. I still have just enough room for the slide machinery to work.
My under bed storage suffered a bit but the DW is much happier now that she don't have to 'jump' into bed with me...
............I still have to work on that jumping thing with her....................
Mike