Originally Posted by mom2boys

I was cruzin along sewing sewing and noticed I was starting to get some skipped stitches and couldn't remember the last time I changed my needle so I replaced it, oiled and cleaned out lots of dust and lint. Now the needle I can't sew more than 2-3 stitches without the upper thread nesting below. I have double checked to make sure the flat side of the needle (Singer 80/11) is to my left. I did notice that the bobbin case is missing one of the screws and have no idea if this just happened or if it has been like this for a while, would this matter?