Day 14 brought a bit of unexpected news. Our sub-contractor and the block layer stopped by and discovered that the wrong mortar had been sent and used when laying the block. I had no idea there were different types. Apparently there are and it makes a big difference.
They both agreed that it could be remedied by pouring a bit of concrete into the blocks in advance. This would have to be done anyway. I am sure these unexpected issues will continue to come up along the construction journey.
I am thankful that it was discovered before we were ready to pour the foundation. Otherwise the block might not have held, and we could have ended up with concrete all over the yard.