Originally Posted by jeffslawnservice
I probably would walk awayfrom this but he is my neighbor in back of me and whatever he does directly affects mesince this wall is what separates our two properties.
even more of a reason to do it correctly. By the sound of it you don't have the knowledge to tackle this project. Some pictures would help, but you don't need us to tell you it sounds like the old wall needs to be removed for proper drainage stone, etc. behind the wall