Day 22 bantams not pipping... shrink wrapped?

[abauchiero]

This is my first hatch. I have easter eggers, silver penciled rocks, and bantam cochin sizzles. Both EE hatched, 6 of 10 rocks, and 1 of 6 of the bantams. Of the eggs remaining bantams, none have pipped. I quickly candled one of the bantams and I can see a little movement low in the egg, and perhaps internal pipping. Humidity was 35-45 throughout incubation and 75 for lock down. All looked good going into lock down. Any thoughts? All those that hatched did so yesterday afternoon and last night - the bantam was yesterday afternoon. I was under the impression from reading many posts that the bantams may hatch earlier than the others, so it reaffirms to me there may be a problem. I would like to help them as a last resort, but not sure how to make the external pip and what to look for with regards to whether they can be helped or not. Thanks!