I am in need to replace my top plates and the top stabllizer rail (fits over liner at top). I am attaching pics of pool, top plates and stabillizer. The pool came with the house 7 years ago, so I have no paperwork or anything to ID the make of the pool. The plastic top caps have part numbers 6774 and 6776 stampped on them with a round circle and a pointer pointing to the letter H (if that helps). My pool is 18' round. The stabillizer rail is 55" long or 55.75 following the curve and 1/2" deep and wide. The plate dimensions are shown in my pics. Please help identify the parts needed and cost. Since I am using salt water, please qoute both the metal and the resin (probably can't afford resin right now).