A while back I was trying to use my embroidery machine (Janome) that I've been using for several years. The thread kept breaking and even the needle broke once. I knew it was threaded right. I took the bobbin out, cleaned it, oiled it, rethreaded it, and the thread still broke. After two days of fighting with it, I looked at the instruction manual one more time and guess what? It was NOT threaded right after all. I was forgetting the last little thing right near the needle. My sewing machine (Brother) does not have that last one so I just didn't see it.