apparently it doesn't matter where you cut from? ive always cut with the top. you can tell the top from the bottom cause the bottom kind of flattens out and the top stays round through out the whole spring. like Brandon said, the lower kind of twist into a notch into the LCA compared to the top just kind of sits in that rubber boot which is why I always cut from the top. so it ddidnt mess with the way the spring sat in the LCA pocket. use a cut off wheel to keep heat low and not fuck up the spring rate.