I want to do a blanket stitch for the applique quilt I am making. I thought I could use my machine. It is a Bernina 830 from 1972. However, The picture that looks like the blanket stitch on the machine is really a blind hem. Does anyone have any suggestions on how to do this? The applique quilt has over 1000 pieces so I want to get it right the first time and now have to rip it out.