I think it comes down to whether you believe that Crest is truthful when they say they tightened their manufacturing tolerances. On the one hand, they could lie to avoid a black eye from the DSOTM.
On the other hand, it seems to me that Crest would rapidly suffer in reputation and ability to win pressing contracts from labels if they had any quality control issues. For this reason, my suspicion (although I don't know for sure either way) is that Crest has likely addressed these issues on the new releases.
