Replaced both grey tanks 2 months ago. The galley tank develped a hole where an angle iron was placed with the sharp side against the tank and a hole wore throw. The main grey tank had developed cracks. Cost about $800 with extended warranty providing tanks and about half of labor. Wouldn't cover any of the underbelly that had to be replaced because of water damage. Very disappointing as the the angle iron problem was a design flaw.
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