Cagey
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If there's excess relief in the neck without any strings on it, the heel adjuster is too tight. Back it off until the neck is flat, then tighten it just enough to get 5 or 6 thousandths clearance at about the 7th-8th fret. Don't worry about the side adjust just now.
Keep in mind that truss rod adjustments are very small. The most common mistake people make with truss rods is screwing them in or loosening them up too much. Don't think of it as a nut or a bolt you're turning; you're not working with fasteners here. You're using a threaded steel rod to change tension on a piece of hardwood. You shouldn't have to adjust more than 1/8 to 1/4 turn.
Keep in mind that truss rod adjustments are very small. The most common mistake people make with truss rods is screwing them in or loosening them up too much. Don't think of it as a nut or a bolt you're turning; you're not working with fasteners here. You're using a threaded steel rod to change tension on a piece of hardwood. You shouldn't have to adjust more than 1/8 to 1/4 turn.