I say keep it! I also serge the edges of my new fabric before washing. I got sick and tired of threads wrapping themselves around the fabric. Too much ironing ! UGH! The more you use it, the more you will use it! One tip: when you need to rethread, just tie the new thread to the old and pull it thru (gently), making sure it seats in the tension discs. You may have to clip the knot and rethread the needle, but it is OH so much easier than threading the whole darn thing! (ask me how I know!)