I understand the process of stringing ATW and why to do it. However, there is one thing that has me stumped. An early step is to weave the short side 7th main into the first cross at the head, tension it, and then tie it off as if it was the last cross going from throat to head. But, when there is only one string, how do you tension it? Normally, I wait to tension any crosses until I have woven the second cross and then do the first two together, but there is no way (that I know of) to clamp a single string, as ATW would prduce, to keep tension. Is this done by just pulling manually?