CPAP -- trouble with ears

I'd like to connect with other CPAP users who developed ear problems while using the device. Nearly two years ago, I saw an ENT doctor about certain symptoms, primarily reduced hearing in one ear, as if I'd just gotten off an airplane after a long flight. She was dismissive when I asked if my years of CPAP use was a possible contributing factor or even the direct cause. She didn't ask any follow-up questions and moved on.  She was sure from my first appointment that it was an allergy, and 9 months later, when allergy treatments didn't help me, she decided it was Meniere's disease, even though I don't have the most common symptoms of Meniere's. I've since read that in fact, symptoms like mine are a known side effect of CPAP use for some people -- it's called aural fullness.  I'm annoyed that the doctor didn't evaluate my question seriously.  I don't want to give up the CPAP, and I'd like to find a doctor familiar with both hearing and CPAP use, so my device can be adjusted in a way that doesn't affect my ears. If you've had ear problems with CPAP use, I'd like to know who treated you -- if in fact successful treatment is possible.