Hi diamondshopper,
You’re welcome.
Have you tried the N4 layer on top of the core without the N2 being used at all? It could be very well that you do need a bit of a firmer surface comfort. Just a thought.
Besides visual cues, it would be something you’d experience trying out the core by itself and when you lie on it attempting to determine if there is some sort of “void” allowing for “excessive” travel in your hip area.
That very well could be the case – some people simply have an affinity for certain materials.
I don’t know that the cover is you issue, but finding something different would not only depend upon the material being used, but what it was quilted to and the quantity of that quilt material. A jersey stretch knit might actually be more flexible than your current bamboo cover, butagain it depends upon the specifics of the material and to what it is quilted. There are some mattress cover vendors listed in the components post here.
This video from Arizona Premium Mattress shows how to vacuum pack latex layers. U-Haul and Lowes apparently are good sources for the bags.
Phoenix