You can get long music wire from www.smallparts.com, or from any piano tuner. I got a huge roll from an on-line piano parts company, a lifetime supply for sixteen bucks if I recall right.
I later found it was easier to get stainless-steel leader wire from Bass Pro Shop. It's not as stiff as music wire, but works fine for pushrods. RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED] Please note that subscribe and unsubscribe messages must be sent in text only format with MIME turned off. Email sent from web based email such as Hotmail and AOL are generally NOT in text format