Hurray--I did my first 3-needle bind off on my vest, thanks to you, Ingrid. Remember, I confessed about my first vest--I couldn't seam the shoulders. Well, I took your suggestion, and finished my vest tonight and the shoulders look wonderful. I did a seed stitch around the front and the armholes, and it still rolls up around the edges. It's made of acrylic yarn, so can I block it and see if this helps? I know you don't block acrylic, so I just wondered.
The 3-needle bind off is the way to go, although it took me quite a while to do it. It made a beautiful seam. I am so proud of my new seams!