I have gotten the both seat motors to operate, forward and backward (the seat is removed and not fastened to the motors).  My question is that both motors are spinning the outside tube.  Isn't the jack screw inside the tube supposed to spin and not the outside tube?  Are they bound up or is it because I dont have the tubes fastened to the seat.  I tried to hold the outside tube and run the motors but could not hold the tubes.  Too much torque.  Any thoughts?  Thanks Charlie