The only time I stay stitch is if I have a lot of seams on the very outside of a quilt before quilting. These don't have extra borders to stabilize the blocks.
For borders, I measure the border length, then cut, then fold that in half and then fold again so that the border is in quarters. I mark the same measurements on my quilt top and pin at those points before sewing. I, also, keep a slight pressure on the fabrics making sure that they pull equally. And...I cut my borders on grain if I can. I have more problems with WOF borders. They are too stretchy for me.
edited to add:
If I am waiting on border fabric for a top that has a lot of seams on the outside or if the fabric frayed badly, I will stay stitch at 2.0 stitch length, to keep anything from loosening with me handling it while I am waiting. Some fabrics I have sewed with frayed so badly, that I have done a secondary, wavy line at the 1/8 inch mark to stop the fraying. It's funny how you find that out after you have sewn too many blocks to want to change them all out.
Last edited by Barb in Louisiana; 02-10-2018 at 07:38 PM.