Here is the million plus spring. I edited the picture to make the wear a *little* more noticeable. You can see a very light shiny area where the straight arm wears on the coil, and the area yours is worn.
2018-04-12_09-50-13 by Charles Stottlemyer, on Flickr
Edit: If you click on the image, it will take you to Flickr, then clicking on it again will blow it up.