This quesion is regarding a K03 sharpener and lets say you already sharpened a knife with it. When touching up the same knife after use, does it matter where it is placed in the clamps or where the clamps on the unit are placed? Or, can that all move just as long as the angle remain the same? I would like to be able to quickly touch it up without having to record where the clamps were or wher the knife was held at.