I use the 505 and handle my quilts a lot during quilting (wrestling is more like it, lol). I do pin the 4 corners and maybe a few pins along the sides of a big quilt. I have had no problems with the layers separating and no problems with uneven feeding of fabric. It pretty much lasts until you wash it. I do use my accufeed (walking) foot for straight line stitching. Spray lightly, in a well ventilated area!