OH MY YES! My sister had given me a set of the filled white thread bobbins. She thought they were the wrong size for her machine and my old singer didn't have any trouble with them except the thread kept breaking. Drove me crazy so after a while I took it out and the thread was so easy to break you can't even use it for basting. You know the three strikes and your out - well, after finding all the bobbins had the same issue they became trash. I told my sister to not buy them again, and she said she thought it was her machine and that it made her feel better to find out it was just the thread.