Hi guest01,
While it’s not possible to “diagnose” mattress comfort issues on a forum with any certainty because there are too many unique unknowns, variables, and complexities involved that can affect how each person sleeps on a mattress in terms of “comfort” and PPP (Posture and alignment, Pressure relief, and your Personal preferences) or any “symptoms” they experience … there is more about the most common symptoms that people may experience when they sleep on a mattress and the most likely (although not the only) reasons for them in post #2 here.
There is also more about primary or “deep” support and secondary or “surface” support and their relationship to firmness and pressure relief and the “roles” of different layers in a mattress in post #2 here and in post #4 here that may also be helpful in clarifying the difference between “support” and “pressure relief” and “feel”.
These posts are the “tools” that can help with the analysis, detective work, or trial and error that may be necessary to help you learn your body’s language and “translate” what your body is trying to tell you so you can identify the types of changes that have the best chance of reducing or eliminating any “symptoms” you are experiencing (at least to the degree that any symptoms are from your mattress rather than the result of any other circumstances or pre-existing issues you may have that aren’t connected to a mattress).
If you can describe the actual “symptoms” you are experiencing more specifically and provide more details about the different combinations you have tried and more specific details about how they compared to each other in terms of making your specific symptoms worse or better relative to the previous combination and more information about your body types and sleeping positions then it may be possible to make some guesses at any changes that may be helpful.
Your last comments could be pointing to firmer layering working better for you but your own trial and error and assessing how your symptoms “change” with different combinations is the only way to guess at the type of changes that would have the best chance of success.
Phoenix