I'm looking to buy a house with an inground gunite pool. The water level on the house side is 3 inches lower than the back side. The concrete deck is starting to upheave as well. There is a slight slope in the backyard, and a retaining wall of railroad ties can be seen under the concrete deck. Am I looking at removing the entire decking and having the pool leveled? The ties are pretty rotted and move easily when you step on them. One skimmer doesn't get enough water to function. Any words of wisdom? I'm having a repair estimate done, but I was hoping to get some knowledge before then.