Anyone have experience replacing a snapped rope in “Automatic Pool Cover“ Brand? We were able to close it manually last night. Can we just splice the broken pieces back together with a torch? Wondering exactly how to attach a new rope to the carriage? We can see how to attach the rope in the reel & found the trick to thread it through the track with a steel leader. How much rope do I need (30 ft pool)? Do I have to adjust tension somehow?