Rule of thumb: after you re-aim them, aim them even lower. HIDs put out a ton more light so you don't need them as high as they were. Ride beside a buddy at night and compare your light output to his. Adjust down until they match. It's more than you think. Just take a 4mm and aim them.
I did this (proper way to re-aim the lights) and had to aim them even further down afterwards.
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