Not sure if I am in the right section, but wasn't sure which category this belonged in...our pool will be two years old this July..Last year I found some hairline cracks along the wall in the gunite where the skimmer basket shelf was..the pool builder sent out the gunite installers, they fixed it and said it was common for that area...just yesterday I found three more, not anywhere close to the original ones...One under my rock wall waterfalls, one on the sun shelf going across the shelf and down the side and one going down the side of the pool that, to me is much bigger than a hairline crack..it also cracked my border tile in half ... The pool builder will be coming to look and I know it's under warranty, but I am concerned...is this normal for it to keep cracking ?