Double Bass Bow quiver mounting

When you say "edge" do you mean the fold in the leather, or alternately the seam where the folded leather is joined?
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I haven't had any trouble with the laces coming untied, I just use a square knot.

But the laces sent with the quiver are real soft leather and I've broken them more than once just getting them adequately tight. Need to go up to Tandy Leather and get a roll of good black leather lacing. Boot laces from the grocery store would be fine but they're brown.
I don't care what color they are as long as they stay tied.