I was looking around this morning and discovered that www.stitchdiva.com
has the size 35's & 50's on a circular!! They have them 24" and 32" long ... They aren't cheap, but if you were going to use them a lot, it would be worth the investment. Certainly much easier to work with than the straight needles and would give your stitches much more room. I don't have any plans right now to make any more of these afghans, but I will definitely keep this in mind when I do. Just thought I'd pass this along.