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Hardy. I think you could put the at '0' and then adjust them (with tools) to be a little higher? I haven't checked if this is possible, but I think it should be.
Like another poster said, I drive in the city at 1-2 and when I'm out in the country I put them up to level. I noticed a lot of people flashing their high beams at me when I first got the car, and it made me ridiculously paranoid about cops. Then I realised they were just complaining about the HID's.