I bought a '95 (series G I believe), 2-channel dual recto today, for 900. It has an attached cord, send level and mix level knobs. I think they gave me the wrong foot switch. Can any one tell me what kind of I need? The store had like 5 boxes and a great pile of switches-but the one I took has a solo button-thats only for the three channel dual I think. Can anyone help?