I measured my oval pool and I didn't get standard measurements so I had the local pool company come to measure. They measured 10'6" x 15'8". The pool supply store said they can order a 10'6" x 16" liner and my size pool is a "known pool size". They want over $500 for a liner. I see the same design liners online for alot less, but I can't find 10'6"x16'. Is there such a size???