I cleaned the spades with xxxx steel wool followed by Caig de-ox it and then pro-gold. They look like new now. While I was at it, I cleaned all the speaker/amp connections and the rag was very black with residue after. Hooked everything back up and noticed a nice improvement in clarity in the highs and a reduction in grain. Could be the placebo affect, but who cares. BTW, the steel wool should only be used if U have unplated connectors as this will remove the finish. Thanks all for the suggestions.
