An easier way to remove/replace the retaining ring for the door boot seal than shown on videos with screwdriver and visegrip is to use "paint can openers" with bottle opener on one side and small hook on the other. For removal, pry from under the spring - since it is rounded, it is less likely to damage seal then screwdriver. For installation, simply insert the hook beneath the retaining hoop and run it around the channel in the door boot seal. Using a second opener for the other hand makes it even easier.