Decided to try using them in wired mode yesterday and I couldn't connect the left earpiece; it seems there is too much acrylic/shell material around the MMCX connector of the IEM. The socket is actually slightly recessed into the shell so the cable can't click into place. The right earpiece seems to barely connect as well as the IEM is not able to spin with the cable connected, it is a very tight fit. It's strange because I do have other BGVP IEMs (DM7 & DM6); I'd have thought BGVP would have gotten the 3D printing of the shells perfected at this point. Anyway, sent Drop support an email, hopefully they are able to sort it out.