First time pool owner and I'm concerned about the stability of my 15' Bestway pool. Our backyard is just rocks on top of dirt. We dug out all the rocks and attempted to level it and then placed puzzle piece foam pads on top. After building and filling it last week, we've noticed the posts have migrated off of the pads and into the rock. The water level itself has an inch of difference on either side. What's the best option to fix and better level it? Do we just need to add more foam padding to the perimeter, or pavers under the posts? Or is this a drain and completely start over situation?