Gratiutous cross-post from our Tradeskill forum:
Niami and the phenomenal crafters over at EQ2 Traders have solved the mystery! While Niami is incredibly sweet about letting us share the info she finds, for now I'm just going to link their write up.
http://eq2.eqtraders.com/articles/article_page.php?article=q27&menustr=060020000000
PS - I'll get this in our db, for for the moment this is the best (and fastest!) write up available. EQ2Traders rocks!