Did you ever find a C4? If you did, and it hasn't been recapped yet, send it to avionic for a recap/reflow/restore/spa treatment. I bought mine on Barter Town in 2009 and sent it to him in 2011. I just gave it a Deoxit bath this winter and all is well. It's never leaving my main system. I only wish I had more room near it to connect a third turntable.