My lovely 201 does not like thread of color. Well, not red thread anyway. It does great with white thread. It did ok with brown thread too. But red thread it hates. The stitch is lousy and I have to mess with both bottom and top tension when I sew with red thread. At least that was the case today when I made this.
Today (August 5, 2012) I used red thread again. Similar problem, unless I cranked the top tension way up. Then, a perfect stitch. I think that I just have to get over the idea that the tension MUST stay the same and ALWAYS be somewhere between 2 and 5. Why, then, would there be choices from 0 to 9?