I have Lionel 736 Berkshire and Lionel tw 175 watt transformer. Just started to operate after many years of not using. Replaced electrical cord due to rot. When I run train ( engine, tender, Crane and caboose cars), train does not run as fast as it should. Measured voltage at pins A and U without train on track I get 18.2 volts. With train on track I only get 13.5 volts. Does anyone have any suggestion?
Thanks