A friend has perma-lent me his Lionel set, which I'm trying to set up for my grandchild. TW transformer. Engine runs moderately well on some of the track, stalls on other parts. So I assume I've got voltage drops and want to test the track. But my voltmeter shows less than one volt output directly from the A and U posts (and trying the voltmeter both ways), even at maximum. I've tried the voltmeter on two 1.5 batteries in series and it shows 3 volts, so I don't think it's the meter. But the train seems to be running too well to be getting less than a volt. Any thoughts? Thank you.