I don't think mine have been overhauled ever. I've had the boat for a year and haven't done it. I'm the 3rd owner of this boat and both of the previous owners kept copious maintenance logs/receipts and there is virtually no mention of any other than routine maintenance. If the port rebuilds work out well, I may have the starboard cooler/heat exchanger overhauled when the port is put back together. Thanks for the heads up!
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