Recently found some eggs my guineas laid in my chook pen and placed them into my incubator, thank you for the helpful tips and tricks and wonderful information!
Well written, only discrepancy I have is with the % humidity being 75% or higher at lockdown. Humidity at that level has lead to 'stuck' chicks in my experince. Too much moisture acts as a lubricant, doesn't allow the chick to turn in the shell while zipping. Can also cause drown chicks by water droplets falling from the condensate on the viewing panes onto the pipped egg.
Although a lot of the process for incubating guineas is the same as with chickens, there are slight differences for temperature and humidity. This is good to know.