Julio, see this one dark chick from this hatch. As long as it doesn't have duck mark it for saving. I see some nice hackles on the rest. THAT one is a keeper for sure.
I just checked eggs I bought. Three of 12 were clear. They are due Wed but I put them in the hatcher anyway. I am going to cross my fingers as well and hope. We had two spikes in the bator-- we heat with wood so not a huge surprise but still upsetting-- so hopefully the rest are fine.