The aforementioned egg has hatched on its own. I took ti out of the incubator and moistened the membrane and then 3 hours later it finally managed to get out.
THanks for everyone's help!
We have helped two hatch (the first one we lost) and one came on its on. So, I am glad that I did help the first two. I htink I was two late with the one which died.
Today they are all dried out and fluffy. I was in the process of moving them to a brooder and cleaning out the remiaing eggs...
I too am worried that it may have got too wet but then again I was so careful to use a q-tip and not come in contact with the area where I could see the beak.