Haven't saw any reports online, so here it is
Guess my luck finally ran out, even though I had a few IEMs with widespread QC issues (Chu, Salnotes Zero, Final E500), this is my first "win"
Other than the faceplate issue, I like the sound (can't justify spending this much since I own an EM6L), hopefully the Chopin lasts long
Take it up with the seller. I've got 50% refunds for exactly this sort of thing, with me accepting to fix it myself... if it's an easy fix and this looks like it, could be a win for both parties, they don't want it back.