What is the consensus on contact cleaners for cables/connecters? I've been using a product from MG Chemicals on mine for some time now (spraying the female ports on my equipment and the male ports of my cables and connectors). http://www.mgchemicals.com/products/801b.html Does anyone know of a reason not to do this? According to the product literature, it "Protects gold for life" & "Improves conductivity". Opinions?