Sounds about right, Ive seen a few ents myself.
My left ear feeling of fullness never resolved either.
I have thoughts about blood vessel irritation, loss of muscle that supports structure, and/or chronic inflammation of the mucus layer that may continue to drive this issue.
Here’s a thought on inflammation though, a person may want inflammation to facilitate initial healing and recovery, this is something that would lessen with time.
For example, some experts call acne during puberty a type of immune training that the body reacts to and overcomes.
The same could maybe be said for the sinus structure.
As a defence reaction, inflammation is necessary to protect the body from damage. Although inflammation removes detrimental materials to enable the body to recover1, it is important to avoid insufficient or excessive inflammation via regulation by a well-established immune system.
Some have also had similar thoughts on diseases like CFS,
an insufficient immune response or ineffective inflammation without the benefits or recovery.