Feeling your pain---literally in my arms and shoulders! Spent about 9 hrs unquilting about a fourth of a quilt last night--had about gotten finished and needing to turn it for borders when I realized I had a pleat that ran almost all the way down the one side. And of course there wasn't any tension problems and part of the borders on this panel had an intricate design---so it was almost picking out each individual stitch! plan to buy a new seam ripper--think I wore that one out!