:lau You just made me laugh out loud! Not for lack of trying on our part though!! I have tried so hard to get some of those duds to be fertilized with will power alone! Haha!
So cute!! I wish I had an answer for you. There may be a common genetic issue with the porcelains then. I've also heard that Seramas are difficult to hatch and a have a local friend that has them popping out like popcorn so I really don't have a good answer for you other than maybe asking your...
It may be an issue with the flock you're getting hatching eggs from then. I don't have any experience with the breed but sometimes there are health or genetic issues that cause low hatch rates.