I've got a short stem in a 21.1 that you can have (if you haven't already gotten one) once I replace it with a longer one on my tallbike. I have the new stem, I've just not gotten around to putting it on. Maybe I should do that. Let me know if you still need it and I'll pop it out for ya.
Alternately you can take an old ****ty stem and file it (takes a while but it works). Just do your best to file evenly all the way around.
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Philosophy and feelings don't change the laws of physics