Just had exactly the same problem with my jill, the kit was about three inches long and dead when it came out and she was really struggling with it, she must of been in labour for a while because she came out of her nest box with the kit about an inch out, and she was pushing hard but nothing was happening, i had to give her a helping hand in the end, there was only the one and the jill is ok, really wanted a kit of this jill as shes been a cracking worker, but ill see what happens next year.