I just got a new SHARKLINE reprive 12x24x54 resin guard pool. Problem I'm having is on both ends 3 of the 6 legs have lifted off the foundation after filling. The foundation was built during the winter because our yard is all lake sand and not stable. Pool sits on 8x16x4 inch blocks , I am no more than 1/8 " off level all the way around measured by both rotary lazer and builders level. The only thing I see that might be a problem is the liner seam on the ends is on the floor and not the cove as it is on the sides. I'm at witts end . HELP.