We bought the first liner from AAM, Co it was so mis measured that the liner had to be replaced. then the second liner came and there waswrinkles on the step under the diving board. We had asled them to smoth out the walls and bottem of the pool before the liner was installed but they didnt, then when the liner was inatalled they didn't have a continuas run, this is what seals the liner to the coping. When they came out to look at the wrinkles that I showed them they said the water pressure would push them out. And the liner wasnt sealed to the coping. This isnt our first liner its our third liner sence we had the pool installed. Mark came out and took pictures and said the wrinkeling on the step was dew to the floating clorinater, we have the same clorinater for 25 years, when our grand kids come over it gets put out on the side and doesnt get put back in for weeks. The liner is almost a year old now and the vinal get's brittle and cannot be taken out and fixed . Please help us if you can Kerry and Sharon Maiden