[njk53]

Our distributor did the same thing. Spent way more time cleaning the corrosion mess up than I wanted to. Per someone elses comment, Zinc-Aluminum coating of internal components will only last so long. Zinc is a sacrificial element which the corrosion will attack until the zinc gets eaten through, now it is eating the bare metal again and it doesn't last all that long. They need a more robust coating that contains zinc as well as a hexavalent chrome such as a zinc dichromate coating. The chromium element is one of the best rust inhibitors around but, the EPA is forcing industries in the USA to stop using hexavalant chromes in their coatings. I don't know of any other coating the EPA approves that does a good job of preventing corrosion as hex chromes.