Gday fellas.

Having a first go at shortening lines,

Is this the correct method. Step 4 has me stumped

1. Measure back reduced length from connection points and mark with permanent marker
2. Unstitch connectors by hand, i have a picker and stitch remover scissors, pretty sure i can do this.
3. cut lines at mark
4. slide line into connector - this step looks impossible how can i get a tiny folded line all the way to the end of the sleeve and how would i see the mark I,ve made and know the length is correct
5, clamp, hand stitch and then zig zag machine stitch - this I can do.

Cheers