Does anyone have a r-390 non A mixer coil to trade. Coil number "T-207". One thing I was looking at is the 390A mixer coil "T-208". They both connect in the same way to the same tube with the same resistors. Any one know if a 390A coil would possibly work? Or has spmeone got a 390 non A coil to trade for a 390A coil? Thanks Dave Faria