Ok, quick update... (having a busy day at work already!) Half way through day 21:
12 in the brooder - 5 BTBJ, 4 GS, 1 SS, 2 OEGB. All fine and dandy!
Still in the bator - 2 GS assists that are now out of the woods and doing fine. One had zipped the wrong end and got stuck, one had zipped about a third of the way around and stuck a leg out, so I took his cap off and he pushed out fine. One more GS was almost done zipping when I had to leave for work. 2 OEGBs and 2 GS working good pips. 5 with no action at all yet, but its still just day 21.