Went thru my layouts, Veeeeeeeeery slowly & carefully, found a few pieces off my 0-31 track that were not supplying the required voltage, missing pins & bent track.
The bad pieces just had to be in one of my tunnels, couldn't find & see, without removing part of my layout.
Because of the problem, had to speed up the transformer to get through the bad area, & if I didn't slow down the train in time, flew off the rest of the track.
Thanks to all for your responses.
