First of all, congrats on finding such a rare and interesting species. As far as taming it down I would recommend that you put the snake's enclosure in a quiet location and handle the critter gently every so often. There's not much more to do than that but hopefully it will tame down for you. If not, I certainly wouldn't mind an
E. quatuorlineata
... Yeah, I had to look up the latin on the Internet

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Good Luck Mate! And I wouldn't mind seeing a picture either

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Cam