Just a caution in case this is your problem. If you store your thread where the sun shines on it, your thread will degrade in the area the sun hits, so when you use it to sew, it is very weak in that area, and will break. I had some older thread I bought disolve, about every three to four inches when I washed the skirt I used it on. What a mess! Now my thread lives in a dark closet. It is not pretty to look at that way, but it only takes one of these incidents to learn a valuable and expensive lesson.