All 22 of my struts are flat. 20+$ each is crazy. Looked at history and combined see real ideas. Took my ball ends off. Cut 7/16-14 threads onto them and installed 1/2" screen door spring cut down to correct lenght. Check this out at Amazon.com<br>Prime-Line SP 9643 Wood Screen Door Spring, 15/32-Inch, Zinc Prime-Line SP 9643 Wood Screen Door Spring, 15/32-Inch, Zinc -...