Bought a new jbead pool liner for our 18' round ag pool. Tried installing the liner ourselves. Pool is half way full and bottom of liner is wrinkle free. The problem is two of the sides directly across from eachother are very loose on the wall. Like there's too much liner and it loose and wrinkled. Is there anything we can do? Do we need to drain the pool and start all over again? We can't just pull those sides up since its a jbead. We're at a total loss and my husband is about to demo the **** pool already. Any ideas or advice?