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Message: [QUOTE="KM Burgess, post: 657966, member: 25453"] Remember to ball hone at a relativley low speed as the balls on a ball hone can impact the the areas where the Nikasil is bonded to the edges of the ports. I have seen small chips and the Nikasil coating compromised by a ball hone that was too big and/or done too fast. Some times a ridgid hone is safer but requires a bit more skill to use ay home so too much material is not removed. Food for thought? Cheers [/QUOTE]