Adjusting bobbin tension on 201
I'm working on learning how to do FMQ on my "new" 201, and have already had some great advice from Polyparrot and others here. I want to adjust the bobbin tension, as I'm getting loops on the bottom, and even turning the top tension to 9 doesn't completely get rid of them.The bobbin thread is difficult to pull out, so I'm guessing the tension's too tight. The manual says turn "the larger" of the 2 screws on the bobbin case - as far as I can see, they're identical. Which one is it please? Next problem -neither of them will move...