I've recently noticed some play in the throttle of my R. There's maybe 1/2" to 1/4" of play -- moving the grip up or down before I feel any pull on the cables. My thoughts are: 1) it might be binding -- crushed by the tank? 2) maybe the cables need lubing? 3) who knows? Any ideas or suggestions would be appreciated. If lubing is the answer, do I need to disconnect both ends of the cables?