Well, I just started FMQ on a baby quilt today, again using the King Tut that I had such trouble with on the last quilt. This has gone flawlessly. Same machine, same thread as last time, but with a thinner batt of a different brand. I'm perplexed as to whether the batt is actually the thing that's making the difference. The first two quilts I made with King Tut had no problems whatsoever but used heavier batts than the one I'm using today. The third quilt -- same batt as the first two -- was a nightmare. This one is fine. One of life's mysteries, I guess.