Wet Dead Chicks

[coveyrun]

My humidity was 67% during incubation,80% for the last 3 days. 3 chicks hatched just fine the rest pipped and died.  I opened the shell the rest of the way and the chick was pretty wet.  The eggs are fresh and turned in an automatic turner during storage.
Anyone have any ideas what could have happened?
sounds like excessive humidity to me, yet the numbers I held them at were in the correct range.
Advice is nice. Tim

[shagomatic]

Too much humidity normal does not kill a chick.  Sounds like poor air flow.  Once a chick gets to the final stages of hatching his air requirements increase tenfold.  This is usually the culprit if they die shortly after they pip.