G'day ray and Mike
As an ex-motor mechanic, like you, I would be tempted to straighten out an old wire coat hanger and poke around until I completely destroyed it!! I admit I did start to consider pulling the cabinet off my KN7000 to get at the cantankerous SD LOAD switch but almost immediately pictured a whole lot of springs and bits flying out and me not having a clue where they came from and the unit being binned as a result (which has happened in my past due to my curiosity and unfortunate confusion in relation to my ambitions compared to my abilities.)
Bob