If you haven't yet, I would try disabling the XMPP/DOCP profile to see if that passes a test. This will tell you if the RAM is just dead or if it's degraded a bit and can't hit the same speeds as it did before. If it does pass, then re-enable that profile and try downclocking or loosening the timings a bit to see if that'll work.

Failing that, you could try increasing the voltage slightly (like +0.05V, I wouldn't go above 1.4V), but I'd be careful on this front to not cause anymore damage.

Sucks that this happened right now, but IMO it'd be better to sacrifice a slight hit in performance than to buy RAM by itself at these premiums.