I have just bought 2 new sanwa servos and they are fitted with flat blue plugs with blue, black and red wires, now my old sanwa servos have black plugs with raised bars to ensure correct polarity with 2 black and one red wires. How do I rejoin the wiring if I cut off the blue plug and solder on one of the old type? Please, anyone know. I wrote to Ripmax with S A E and no reply after a weeks waiting..... Geoff Parker.