Great price , Delivered on time , Set it up slept on the couch for three days to make sure it set up right . Very comfortable . But about 6 months after I got it . I hurd a sound like a spring letting go . And now I have had it for a year and have herd the same thing about 4 or 5 more times .Any-one else having this problem . I am not sure what the wauranty is on this matteress . I am probably screwed because I waited to long to report this ???