I've got a 60mm Singing Rock rope bought about 5 years ago for a sport climbing trip (1 week). Since then its seen very little use, perhaps a few times a year. This is until recently when I moved somewhere which has meant I can get out on rock on a weekly basis. The sheath is in good condition, no furriness, no visible damage, can't see the core anywhere. There seems to be a meter section about a third of the way through the rope, where the core and sheath seems to have become separated i.e I can feel them moving separately. There don't seem to be any flat spots, which perhaps means the core isn't damaged.
Trawling through internet rope advice, I cant seem to find anything specific about this, as it usually seems to be at the ends where the knots are tied and the advice is to cut the ends. I'm well aware of the "if you need to ask you should probably retire it" advice, and am happy to. Just wondering if I'm being overly cautious. Any advice would be apricated.