I haven't lost a spring, but, I was cleaning my Husquvarna Sapphire 875 and the little scissor that cuts thread automatically flew into the bobbin racer. I tried to get it out with tweezers, dropped it and now it is floating around in the bottom of the machine. No more automatic thread cutter, and I will have to take it to the shop where I bought and have them get it out. I was reading the manual to see if I could do it, and it says it big, bold letters...Be careful when cleaning around the bobbin for the little cutter blade...DUH!!! If anyone has any suggestions...I'm listening.