RS/6000 7012 Powerstation front panel question

On metal cased (7030 and later 7012s) RS6ks the yellow button is push-on to a switch that screws into the front panel. These are easy, just push the button off with two prodding devices (straightened paper clips, old dental picks, small cocktail umbrellas, etc.) As this is completely useless to you, I naturally put it in first. Older RS6ks are the same setup it appears, but you need to contrive a small hook (again, I commend old dental picks to your attention) that will hook under the rim about 1/2" below the surface of the button. Use two for a balanced pull. Have fun, and long live the classic 6K! P.S. - does anyone here have an idea why I.B.M. used Medeco locks on the system unit, when plenty of mischief can be made anyway? Fortunately, both mine came with keys.