Mine definitely can't do what they did in the first weeks, before taking them to high fsb/vcore. Still, it seems they have "broken in" and haven't slid any further in a month. I can run all different stress test for hours even 10kfft for hours at 1.33vcore/4.25ghz. On the way up the first time I could do that with 1.28vcore.

So, no signs of recovery for my chips, but no further degradation either.