I need to replace the spiral balances in my windows. I need a 15" spiral balance but I am not sure about the shoe or sash guide. I attached 2 pictures. One is the spiral balance. The second picture is of the side of the sash which has a 5/8" channel along the side. It has 2 holes in the side of the sash that I assume were used to attach a shoe and guide but I'm not sure. . Any help would be appreciated.

