I've been noticing increased "flutter" in the helm (Edson chain and cable) as of late. It always has fluttered a bit when shifting from neutral into hard reverse until the boat gains some momentum, but I've been noticing the same at times when there is no sidewise pressure on the rudder, as there is when sailing to windward when you normally have some weather helm. This fluttering occurs when motoring, or on a deep broad reach, etc. I suspected play in the steering system, and tightened the cables according to Edson's instructions---yet with no play in the steering system, I can still feel a slight wobble or flutter from time to time. What would a worn rudder bearing feel like? How does one test for this? Could there be an anomaly in the surface of the rudder? Is this a dangerous condition, or something that can wait for close inspection at next haulout? The archives shed little light on this...