I have these also pointing on a slight vertical angle. On a low car one side breaks the beam and a higher car on the opposite side. My first place is inside a tunnel, so disguising them is moot. Another one will go at the end of a hidden siding where I back in a passenger train to light an indicator when the end of the train is at the bumper. I think it would be very difficult to aline both pairs identically. Every time I test, only one responds to blocking the emitter or sensor. Would a capacitor help the caboose problem and where could that go?
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