I got my Vision Spinner 1300 yesterday and, so far, love it. One question, though - does it have to be set at an exact voltage (say, 4.3V) or can I dial it anywhere in between say, 4.3V and 4.8V that makes me happy? So far, I have it set just north of 4.3V and it seems to be working just fine, I was just wondering if that meant I was getting actually a tad more than 4.3V or if that was just wishful thinking. Thanks guys for all your help on this topic so far.