Went to set up my Intex 20' steel frame above ground pool and the liner appears to be done - many small leaks around the seams at the bottom. Of course replacement liner at intex is out of stock. I have found one place that has 20' foot liners but they too are out of stock. Seriously thinking of picking up a 25mil 21' liner and just "overlaping" as so many here have done before. I know I will have tons of wrinkles - but other than the wrinkles can anyone else think of a reason this wouldn't work? I have small leaks but structurally sound - so structurally the old intex liner should keep the new thinner liner from blowing out the sides right?