+1 for Heirlan. My sentiments exactly. I'm one of the biggest Mee fans in the world—love pretty much all of the other 10 or so IEMs I've bought from them. This one, though, was a let down to me. I tried tip-rolling, readjusting, and inserting with my jaw open and closed. Just couldn't get the right fit and seal no matter what I tried. And even then, the sound I could get was below my usual Mee expectations. I'll happily keep buying their others, though!