I was under the impression that even 100% humidity was not too high? And my substrate was moist...but I could not squeeze any water out of it....I don't think...have incubated 100's of bearded dragon eggs with this same vermiculite/water mixture with great success. But maybe it is...if this is the case...what do you suggest? Just make up new tubs with less-moist vermiculite? The humidity stays around 90% within the entire incubator, not just in the tubs.
Really high humidity is good, but a lot of moisture touching the eggs is bad.