Hearing aids for ukulele player

I use the same large non vented click sleeves and while I do find them more comfortable than the molds, I do get feedback in my left ear when the full prescription gain is used. Turning the gain down in the 3 kHz region was the only solution. I couldn’t stand the molds. I see your loss at 3 kHz is 5 dB lower than mine. Perhaps that is enough to make a difference.

I think the large sleeves are slightly oversized to create a mold type seal. They were hard to like at first but they were the only ones to stay put.