One more test, if you're still pondering anyway. Don't pull it down to max length but let it rest naturally. Then bend forward and check profile. I did this with an IM Aran in L and the fabric (albeit merino/cashmere mix) bulged out enough to hide a basketball in there. In layman's terms, I looked like being pregnant, last quarter. There is a lot of stretch in the Aran. Is the Gansay the same, or is the wool less flexible?