Don't know if your seats are TODD but your parts are not listed on the TODD website. The simplest fix ( but not the cheapest) would be to replace the slider mechanisms. I would assume that other pieces of yours are somewhat worn out too.
A second possibility is to find a machine shop that can cut and bend some stainless rod in the correct size to make new springs. I have no idea what that might cost.
Last time I went through this exercise I bought the entire kit which includes the springs and the sliders....it wasn't terribly expensive. Maybe $40-$50 per seat?