Hi Pspa123,
Have you tried some of the suggestions in the other replies I’ve mentioned … and what was the outcome? I checked back through your previous posts and couldn’t find any feedback about the results.
What did Arizona Premium suggest?
If you are considering adding a topper did you read the topper guidelines in post #8 here (that talks about thickness and ILD)?
Is your wife still uncomfortable with adding more latex?
I’m not sure what else to suggest that hasn’t already been mentioned. Thinner toppers will have less risk of alignment issues but will have less effect on pressure relief. Changing the support core will give you the chance to adjust the firmness of each side separately but it will have less effect than changing the comfort layers (the upper layers are what you feel more) but only she can decide if it’s “enough” for her. The advantage of this is that it wouldn’t affect your side of the mattress (which seems to be working well for you) and you wouldn’t be adding more latex to the mattress (which you mentioned your wife doesn’t want to do). If this wasn’t enough then you would still have the option of adding a topper available to you. In the end only your own personal experience (or you wife’s) can know with any certainty whether a specific combination will work well for you regardless of any “theory”.
Phoenix