Dammit! You've stripped it!

I was installing a SRAM RED rear derailleur
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and discovered that the bolt head had been stripped in a crash,
so the hex key wouldn't fit anymore.
Dammit! You've stripped it! (Title redeemed)

Now I get it—maybe that's why most modern rear derailleurs have their adjustment screws positioned at the back.
I think of SRAM's rear derailleur as
"a Shimano Tourney Super (シマノシュパーブプロ) with modern materials,"
but they didn't have to copy this aspect of it.

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To avoid having to use a flathead screwdriver for adjustment,
I filed down the stripped part with a diamond file—
and it turned out I had just the right tool on hand to fit the slot.

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Fixed.

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