It is possible the rubbing came from leaving the wrong amount of slack in the outer cable inside the top tube. The fix may have actually been shortening it so that you now see the back part as being too short. Keep in mind you can slide the cable forward and backward to get it how you like it. Turn your bars all the way to the right and pull the cables through to the rear as far as they can go without the cable binding on the head tube. That is the limit to how much cable you can have at the rear with the current total length. Then decide how you want that length distributed front and rear.