What is most important to get level - the metal frame or the liner bottom? We just bought an Intex 22'x52" ultra frame. The frame top is level within 1" side to side but as we started to fill the liner bottom is more like 2-3". We have a little over 2" of water on one side and just a barely any on the other. I worked to level the frame but didn't dig out as much under the liner and wonder if I should have now. Thoughts?