I'm going to message Metzer about this, because I did the same thing my first try with this same chart, and they don't make this clear at at and I'll had to correct several people when they tried to follow this chart. That 86 and 94 that the have listed under humidity are wet bulb temperatures, not percentages.
If you've had it that high the entire time, you're likely to run into the problem of your eggs not having lost enough moisture and the ducklings drowning as they try to internally pip.
The other issue here is that you said you have an internal pip. At that point, it's too late to severely drop the humidity. Because when that duckling externally pips into a dry incubator, it's going to shrink wrap.
Put your humidity at about 60 to 65 percent and mist the other eggs. Hopefully the misting will help them lose more moisture before they start to internally pip, but at this point it might be too late to make a big difference.