incubating question please.
I think they might be OK, I've hatched chicks at 45% humidity before, it's just not ideal. Have you tried putting a separate dish of water in also? Or a wet sponge, the wet sponge seems to really help raise the humidity most of the time.
Sorry, I had to go offline last night. If it goes WAY too high (above 80% I think) then maybe open the lid quickly to let some out. Otherwise it should be fine to leave it at whatever it is as long as it is above 40 and below 80.
Have you read this? It is kinda long and has so much info it might be confusing but might help.