I am currently at the end of a dry incubation hatch. I am on day 20 and started with 16 shipped eggs. 5 ended up clear 2 early quitters and 9 in lockdown with 2 pips. So far this is the best batch of shipped eggs for me. I had it between 30-35% humidity up to day 18 then jumped it up to 65%.
Thats good to hear that you are having an improved hatching rate this time and now near to getting your chicks
I have used a lower humidity for many species of the years with a sucessful hatch rate. Here a link to an earlier thread i did which explains the relevance of the humidity to the health of the developing chick.