I have had my much loved 45 yr old pool remodeled, it's been a month long struggle but almost complete. When tile crew arrived they began tile install until we asked about the Theroseal layer we had requested in the contract. I called contractor who called crew to stop install, take down tile already installed, put on Theroseal. Crew came back next day with wrong grout color and no water level, I was upset about the grout and they went to local store to try to get a dark grout, but proceeded without water level instrument. They finished entire tile and grout job in one day working 12 hrs. I could not see any significant issues with install until pebble finished and water put in, but now I see that the water level was an important tool that was left out. The tile on one wall is 1/2" higher on one side than the other. I can notice it now and it bothers me but job finished and not sure if this should be addressed in final payment. The contractor was not around enough at the beginning of the project to give much instruction, the crew was on their own.
I have attached pictures of discrepancy I see when water is almost at tile line during latest refill of pool water. There was a 6 day "hot start" to correct mottling issues in pebble finish, so my mind and eye was centered on that and am only now noticing tile line off on one wall. Looking for advice, would this bother anyone else or is this a small error. Thanks.