I gotta ask you. Does the jill bite you when you handle the kits?
It seems to have been a problem overhere when people use a jill who is partcially wild.
Now, the jill I used was only 12,5% polecat and she didn't bite me at all. But I know other breeders who used 25% and 50%, and their jills had a tendency to bite them during the raising of the kits.
(Note, the hob i chose for the litter was between 25% or 50%)