In Blue, we prefer to sleep on a bed that is more or less level. We can deal with a little slope, but too much slope front to back and we find ourselves sliding off or crunching our heads against the headboard. Too much side-to-side slope, and we both end up sharing the port or starboard ¼ of our full sized bed. This is just fine (perhaps even kinda nice) for a short while, but our old bodies need to re-position frequently - which is not easily accomplished when one of us is squished against the cabinet alongside the bed. Thus we'd like to be able to level Blue when his parking spot is on an incline.