I finished my son's hat last night. It was the first circular project I did, and I used magic loop. I was moving right along until I came to the decreasing section on the crown. Then the two sides kept pulling apart, making my stitches very tight. The fewer stitches I had on the needles, the worse the pulling got. Is this typical for magic loop, or was it me? I have the Boye interghangeables if that makes a difference. I'd appreciate any advice before I start my next projects. I was going to tackle toe-up socks, but since the diameter is so small I'm nervous now.