On my 1980 C22 I have found that the keel cable has cut a groove in the forward center of the cable pipe where it exits the boat in the keel cavity. The previous owners completly re-did the keel assembly. The keel has been rebushed. The shaft replaced, the whole assembly centered and "pucks" epoxied to the keel head. They also replaced the cable with a new SS cable and fittings.I have found a groove cut into the galvanized pipe that surounds the cable where it exits the boat. The cable slips into this groove when fully up and when totally down.I always sail with the cable lowered 2 turns to remove the vibration noises so the cable is not in the groove when sailing. Also the groove has not cut into the fiberglass housing yet and there is no wear on the cable. If I leave the keel loose 1/2 turn when I load it on the trailer the cable is not cutting into the groove. I dry sail everyday so I use the keel winch alot.Has anyone else found this problem and what was the outcome or repair.Thanks, Ray