Product review (4 stars): Good, but flip your spacers around!
The video from Repair Clinic wasn't bad, I found it much easier to flip the spacers around and wedge the rubber end between the spring and a counterweight on the drum.  I even had to wedge the spacer in using a flathead screwdriver to really get a tight fit.  Only then could I keep the spring from popping off.  It does take a fair amount of hand strength to pull the last bit of spring around towards the end.  Also - I didn't need to remove any panels like the video showed; you don't gain any advantage for the only hard part of the process (the retaining spring) so I felt it was unnecessary.  Good luck!