It has got to be a myth that they are harder to hatch! My Maran egg was the only one to hatch this morning out of the 3 that I put in my inexpensive chick bator. He is very healthy and it was a very easy great hatch! The humidity from day 1-18 was 45-50% and the last few days it was 60-65%. It was a late hatch though on day 24, started peeping day 23, before that nothing. I wish you the best with your hatch!!!