Hello All, I have wired a Pz3 NS&S to an RX-18 board. Mine too runs backwards, I followed the wire colors etc. I will switch them. My tank makes the sound when the motors are just bfore starting but they are stopped. Would the reverse polarity cause this?motors bad or tight? trim on transmitter does not help. When motors run audio starts making a screeching sound. I will reverse motors. They are the stock ones and will be replaced by the 3 to 1. It goes through start up ok just for info. I am not using a smoker. Thanks all.
David