Unfortunately, I can't see anyone buying this earphone with the QC track record it has. It's not just one batch, but pretty much all of them that have this problem, it seems. Too bad, they were on my purchase list.
I'd love to talk to someone from Beyerdynamic to get the real picture on these. Like has happened with some other lemon earphones, these will likely be discontinued by the end of the year. Just a guess, depending on backstock.