All of a sudden when I FMQ the needle will seem to jump and I'll have a stitch that's an inch or so long. If I keep running the machine it will eventually catch and the normal stitches will start to appear. I'm going crazy trying to fix this. No problem with straight sewing. It's as if the bobbin thread is not catching for a stitch or two. I've taken everything apart and removed the dust bunnies, threaded and rethreaded both top and bobbin.... even adjusted the top tension even though it doesn't seem as if this is the issue. I've read the trouble shooting section of the manual.... I have restarted - only to have these big stitches, have the thread break, even had the needle break - over and over and over again. I'm sooooo frustrated.
I'm using a Brother 9000 which has a top loading bobbin. On my older Brother there's a screw in the bobbin case that allows you to adjust the tension, but there's nothing in this to adjust.
Perhaps that's not even the issue ....