Hi. We are brand new above ground pool owners. We have a 15 x 48 Intex metal frame. We spent weeks leveling, have EPS foam under and pavers dug in under each leg. We finished filling pool today. Legs were level when we started filling and after smoothing bottom of liner, but now that pool is full, several legs have spread out at the bottom of the leg - they are being pushed out by the full liner. The result is a wider circle at the bottom of the frame than at the top. When we kick them straight, they just shift right back out. Pool is within an inch of level. Is this normal? We are panicked about structural soundness. Would appreciate any guidance!!! Thank you.