I want to replace my mattress I my TT... My question is I have a Wildwood X-lite with a Murphy bed( short queen) the mattress in it now is about 4" in thick. Most of the foam mattress are in the 8"to 10", wondering if the thicker mattress will compress and work with the Murphy when up? Has anyone try to use the thicker foam mattress on they Murphy beds? or if they replace the mattress what did you use? Thanks