I pulled the cover back to get ready to open the pool and on all corners the liner has pulled out from the track. Three corners aren't bad but one has pulled out pretty far. I attached a couple pictures to see if you think it can be fixed. I've been reading and it seems it would be best to not fill it all the way up yet and wait to try to stretch it back into place. Is this the best the way to go or does it not even seem like it can be done? Any help is appreciated.