Hi PapaMike,
Thanks for the picture. The layer in your picture quite “clean” and I don’t see any discrepancies or “irregularities” that would in any way affect the quality, feel, or performance of the latex.
All latex pincores are “blocked” because The pincores in latex don’t go through the entire molded core. A latex mold has pincores in both the top and bottom of the mold that don’t meet in the middle so unless a layer is slit from a section of the original 6" molded core that only includes the top or bottom pincore holes the holes will only go part way through the latex and this is normal. The depth of the holes will also depend on where the layer is cut from the original core. You can see some videos of how different types of molded latex is made in post #3 here. You can also see some pictures here of Latex cores which show the top and bottom pincores. The breathability of latex comes from the open cell structure of the latex.
Phoenix