Steve, I will go out and take a picture of the spring. I will also measure the spring for you. When you slide it into the track and feed it, it just fits. Feels a little like it will come back out, but doesn't. It does help quite bit. My problem was that I put safety glass in front window. It is 32" thicker, which makes window a little heavier. The extra weight, is a little too much for the cranks. Inland RV and Vintage cranks are the same. I am going to change my front glass back to plate glass as I have a rock guard to keep it from breaking. I will leave the springs for added ease. Kenny Send me ur email and I will send you the photo's.