Thanks for enlarging the pictures. Too late for better pictures as I don't scuba - the pool is filled. And one skimmer is at the halfway point while the other barely has water. So we're past the toothbrush and flashlight point, and the builder already thinks were a PITA. He's been paid for everything but plaster and is less than thrilled we're questioning his process. Are there any published "Industry Standards" I can refer to when challenging the quality of his work?

And is it possible the pool won't leak but the plaster will be discolored or ther will be a bump because it didn't adhere to the shell?

And if there is an issue, can you effectively do spot repairs (that are cosmetically indistinguishable) or do you need to remove all the plaster and start over?