I have purchased a replacement set of 1937 Cadillac headlights that I want to take apart, rewire, and have the buckets chrome plated. I have removed one of the lenses and set aside the two wire retainer clips and etc. There are three tension clips attached to the outide perimeter of the inner bucket that mounts the inner bucket to the outside bucket or shell. If I gently pry one of these clips up the inner bucket tends to separate from the shell. How do you get all six ends of these three clips to disengage at the same time so the buckets will separate and come apart?