Well my worst fears were realized last night and I ran out of yarn to finish the baby sweater. I am about 1 inch from complete. The pattern called for 3 oz and I had just under 4 oz. It should have been enough, especially when I had gauge and everything. Alas, this is why yardage is a more useful measure than weight. I looked for a complementary yarn to do the remainder but I don't have anything. I suppose I can just frog it and put the yarn aside for another R&S baby present. I'm very bummed.