I have a nearly finished 7' warp-rep rug on my Kessenich jack loom. Tight sett/high tension have created weaving challenges (pushing floating shafts down manually), but otherwise all was well until a rope that holds lamm and lifts 2nd harness snapped. I've replaced ropes before, but never with a project on the loom. Any advice on how to approach? I can't easily shorten the rug; still 4" of pattern and 3" of hem to weave.