its always driven me crazy that i could type in positive numbers, but for anything negative, i had to scroll.
after watching this video, i noticed, dude is entering in negative values without touching the wheel.
http://www.youtube.com/watch?v=iHOXXsu4ehc(that is the kev brown 'making a beat' vid youve all seen)
anyway, playing around with it last night i figured it out for certain -
you hit enter before you type the number, and it changes to negative.so 'enter' key also doubles as a negative/positive 'toggle'.
i never knew that, and im not sure if it's in the manual.