I semi-agree, but I did assist 2 that are doing perfectly. I think it depends on the reason for the assist. One was zipping the wrong end, but in the proper direction, so I knew he was just backwards in the shell. I think he just ran out of room in the pointy end, so I helped finish the zip, and peeled of the stuck membrane. The other zipped such a wide line, his leg pushed out and was having trouble rotating with a leg out, so I helped it finish zipping and it was fine. I can't tell which 2 they are now.
Bahahahaha I was about to say "read on!" Sadly, this one isn't going to pull through. I removed the rest of the air cell, and put some Vaseline on him, and got some of the membrane out of the way, but he never has tried to push out. It looks like proper position, but I can't tell for sure. I turned off the bator at 2:30 am, but he was still breathing when I left for work. I have read several "trash can" hatches lately, so I left him in the bator, but I expect he will give up soon.