Being as we can't seem to find a pool liner to replace the one we do have because it's the wrong size....I was wondering if someone could tell me if the current liner would still work? Our pool is a 12'x24'x52" oval above ground pool. The liner we bought earlier this year (the size was posted wrong so hence why we have the wrong size liner) is a 12'x21'x54" oval pool liner. I'm assuming we lack 3' of liner to fit our pool. Can we possibly stretch this current liner to actually fit our pool properly with no issues. We have the foam coves in but if we need to build up we can. My biggest concern and issue is stretching the liner to get it to fit from one end to the other. How exactly would we do that?