From what I have been able to observe, your first thought is the most likely. I think the issues have involved a handful of boats and are isolated incidents. However, I would not purchase a new Tartan or C&C. I say that because of the financial issues the company appears to be facing rather than a because of a quality problem.
Just my $ .02
hunter Legend 37 Semper Paratus
Formerly - Tartan 34C Yawl