I take a coat hanger and make a removal tool. Cut a length approx 18" long and bent one end 90 degrees x 1/4" long. File the bent end to a point. You insert the bent in the stock and feel the hole in the washer. You give it a little twist and hook end of the tool will seat under the washer. Once under the washer gentley pull back to remove the washer. It will be as good as new and can be reinstalled.