Hi Scubamom,
I forgot to answer one of your questions … sorry 
Yes … there have been a number of members that have done this. Since the specs of the Beautiful are known … if you buy latex layers that are the same type (blended Talalay from Latex International) and thickness and firmness level (ILD) as the Beautiful and stack them inside a similar stretch knit cover you would have a close equivalent (with the main difference being that the layers wouldn’t be glued and that the cover would be slightly different). The component post here has some of the better sources for layers and components (including covers) that I’m aware of.
Phoenix