Welcome to the Quilting Board!

I called the Brother Customer Service 877 276 8437 to inquire about an issue I had with my Brother machine. They were very helpful & told me which item to buy. It was several dollars cheaper than I had found elsewhere & shipped it to me very quickly. I'm sure they will be a good resource to find out if they even have a straight stitch that will fit your machine. Good luck.
Sew a Little, Love a Lot & Live like you were dying!
Try sewingpartsonline.com I have gotten several things from them I didn't think I would be able to find but did. I I found parts for my Brother SQ-9000 which I thought since I got it at Walmart the parts I wanted would not be available, But there they were.