[Doug G.]

Actually it is very simple. Get a piece of wood approximately the same size as the inside of the upper. Slide it in so that the tip of the ejector pushes on the wood. Press in the center of the ejector to flatten it. Then give a little tap with a brass hammer down and forward. This method also works well in removing, just give a little pry with a small screwdriver and they pop out easy as can be. If you have no clue what I'm saying let me know and I'll take some pics for examples.