guys, I have 2 tracks on the TIU. both operated, but then now I cant get my one track working not sure what I am doing, I push the TR button and you can see TIU 1 and 2. my pcc trolley is one 1 and 464 on the 2. but cant seem to assign the TIU 2 and get it going. Track voltage is on, so there is power loclon super bright and my cars all are full lit. so no issue there. so its me!! cant figure it out. should be a simple issue, but im flustered. Maybe Barry can chime in??? I looked in the book but it seems as though its not telling me something. I have barrys book, but its now at my office download there!!!!