15x30 above ground pool. Purchased the pool via the home we bought 3 years ago. Pool was covered at time of closing and inspections but previous owners said whole pool was 4 years young. Had receipt for purchase but no installation receipt. Think they put it up themselves. From that opening the first year, there were wrinkles near the skimmer. When filled 1/2 the skimmer opening, not too bad aesthetically and doesn’t seem to be troublesome. This week, i started a slow drain due to cover blowing off a month or so ago and the ensuing swamp that has formed. I have 1/3 pool drained and it’s still in the same area but the looseness of the liner is more widespread in that area than I knew. It is an overlap liner. Can I full drain and pull this existing liner taught in that area and re install the coping strips or is a new liner in my future? See picture