Sounds to me like your point motors are not properly centred. The throw of the PL10 point motor is much greater than that required to move the blades. You can have the situation where the blades move back and forth OK, but the off-set motor leaves the PL13 contacts in mid-position on one path. I've had this problem several times and have had to carefully adjust the position of the motor. I assume you are using PL12 mountings rather than direct attach.
One way of overcoming this is to first fix the blades of the points in mid-position using a bit of blue-tack between the blades and stock rail. Then fix the point motor so that the operating pin is also in mid-position. That should ensure proper centering of the motor and hence the switch.
One way of overcoming this is to first fix the blades of the points in mid-position using a bit of blue-tack between the blades and stock rail. Then fix the point motor so that the operating pin is also in mid-position. That should ensure proper centering of the motor and hence the switch.
