Hi Buffy…..Great news to hear you’ve done so well with your sticky chicks

and that at the time of your posting they were doing OK. Incubation is such a mine field of complexities trying all the time to replicate the good old broody hen. I think at times we beat our selves up a bit when things go a little less to plan, trouble is its such a learning curve where the simplest of situations that often go unnoticed can affect hatching rate.
It was the humidity that caused the stickiness due to eggs hatching alongside each other, its nothing you did wrong and not the temperature. Your last chick hatching at 63% humidity only had that difficulty due to the earlier humidity being a bit high perhaps prior to you seeing it at 70% it could have been higher

…..I’ve seen it regularly reach 90% at hatching especially with a lot of eggs……. Shetlandpaul gave a great bit of advice at lifting the lid to reduce humidity, it’s a quick fix and works well……. Personally I like to keep humidity around 60-65% at the point of hatching.
Now getting the little buggers to drink. A wee tip, shallow dish filled with coloured stones or grit cover with water…….The colour will attract them and its amusing to watch when they get a watery surprise when pecking the coloured grit or stones.
Hope this helps happy hatching were all learning ay!
Dave