The same thing happened to me as what happened to analogluvr. grgaudio sent me a faulty cartridge and wouldn't answer emails. I sent the cartridge to Soundsmith to see if they could help and they said it was broken beyond repair. Finally grgaudio answered an email, but said they wouldn't even discuss a deal that was done four months ago. My initial emails asked about who did the retip, how many hours, etc. The guy is a crook. Of yeah, he sent me one cartridge that had one channel out. I sent it back and he sent me the replacement...that was broken beyond repair. Steer clear of this one.