I can never remember, I always go the wrong way first. IIRC I always try down first. And I think it is the same direction on both sides. (unless someone replaced the adjustment shaft with the wrong side)
Just had this same issue going the wrong way first.... It is down I believe. I found it hard to get both wheels the same (I still want is better) The midship ajuster also seems funny as if your wheels arent the same it is not even and may effect the linkage and petal force.