My automatic pool cover won’t close, even though it opened earlier with no problem. We replaced the cover and motor 2 years ago (Pool Cover Specialists Infinity 4000 & Automatic Pool Covers motor). It will surge forward an inch than stop (so it has power). The rope on one side has slightly less tension then the other. My best guess is a broken rope? If so, is that something a novice can fix or it requires a technician? If I’m wrong, other suggestions for how to fix the cover?