I get the feeling you all are tired of this encounter... I am realizing now that "Roll Init!" is a great way to start off a home game, but maybe not an play by post.
I'm wrapping this fight up, but I don't really feel comfortable about fudging the numbers.
I do notice these grell were surprisingly tougher than I had expected them to be against 6 players. The adventure was written for 5 players of 10th.