Have you looked at the REM results? How close did they get you to hearing 6000hz? It might be possible in the left ear, not in the right. How picky are you about “sound quality?” Frequency lowering can definitely make 6000hz audible, but you might not like it. If I’m remembering correctly, you were already complaining about sibilance (harsh sounding sh sound) That results from hearing high frequencies you haven’t heard before. Many people adjust to it. Others don’t (or don’t give themselves enough time–not sure which) TV has an easy fix. Get the device that allows direct streaming to the hearing aids. As far as how to deal with the Costco people. Share the problems you are trying to solve and let them try to solve them. I’d stay away from requests like “I want to hear 6000 hz.” and put it into terms like “I can’t understand my wife.” I don’t remember if you’ve ever shared your word recognition scores. Keep in mind we’re talking about improving your hearing, not perfecting it.