too many layers
Flannel rag quilt - whether full size or lap size, in my opinion, is one layer thick. When you wash the quilt, the rag edges fluff up creating thickness to keep those using it warm. I made my first lap rag quilt in 2013 and had no problem washing/drying it. Sorry you have had so much trouble washing it. I hope you will not quit making a rag quilt because of what you experienced. God bless you.