Product review (2 stars): I had previously removed and reinstalled the outer spring using needle nose pliers and screwdriver and that was not to bad, but
This probably works well, but I could not spend the money for something that I would only use probably once.  I had previously removed  and reinstalled the outer spring using needle nose pliers and screwdriver and that was not to bad, but the angle of accessing the inner spring was virtually impossible. I followed others suggestions of using zip ties, and tried using my own pliers, screwdriver, etc.  However, once I removed the front panel (approximately 10 minutes) I could reinstall the inner spring with the pliers and holding down the spring in the loop with a Phillips screwdriver.  Still it took took a fair amount of strength to stretch the spring.