How often is it recommended that the Amel 54 cutlass bearing be changed? Mine was last changed 6 years ago and I have not seen any sign of water ingress in the oil since, not experienced any problems. Reason I ask is that I will soon be having a coppercoat put on after which I hope to avoid hauling out for an extended period. Perhaps I should also replace the rudder post stuffing at the same time seeing as the plastic collar is now extremely tight to prevent leakage.