I've seen posts about stilettos and there seems to be a lot of you that use them. I never have. Until today. I had a big stack of 45 degree triangles to sew together. They're easy enough to chain sew by starting at the square end but the seam seems to veer off ( that's tricky to say and to type at the end. I was getting frustrated until I picked up my seam ripper and used the tip to hold the ends together as it went under the presser foot. That worked a lot better but not perfectly. Any suggestions on how to keep a good scant 1/4" seam all the way down the side of the triangle?