I tell myself its just metal. When you think of what we do to frogs in high-school… what does it mean to open up a typewriter and poke around its insides? To learn often brings with it mistakes… one of mine was with a Smith Corona Galaxie XII (Question Marks are over Rated)… this machine worked great… the type was clear and no issues at all. Then I had to see what the problem was. The result my Blue SC bought the farm and became an organ donor and a lesson in how not to fix a question… that was better left unanswered.