Reckless Pyrostone currently doesn't take the reduced haste rating into account - should be 10.0 instead of 11.0 for 0.8 haste rating, and even lower once 3.0.3 goes live. So Items with single yellow slots providing a +2 SP socket bonus should be rated at +12 for the gem slot instead of +13.
Similarily, Items with 3 yellow sockets and a +5 SP socket bonus are no longer worth socketing with reckless pyros anymore.
I suppose you can just as well rate every single gem slot at +12 as long as haste rating isn't going up above 0.8 PP again.
Same goes for
Purified Shadowsong Amethyst which should be at 6.7 by now, affecting the ratings of all the helmets with metaslots (all should be rated 0.3 better).
On a sidenote, many thanks for all the good work.

Have been reading this forum and specifically this thread for a long time although only recently felt the need to register in light of the changes WotLK brings.