I just purchased the above Bachman Track Pack but can't seem to set up the piers where they are supposed to go according to the photo on the box. The photo on the box shows a straight piece of track supported on piers on either side of the lower track. However, when I set it up the straight track connection on the upper piece is directly over the lower track and I can't put a pier directly under the connection. I have to slide it back on either side resulting in a situation of an unsupported connection that dips down when a train runs over it. Any ideas on what I'm doing wrong setting this up? It came with 19 pieces of 18" radius curved track and 1 piece of 18" radius curved section that has a terminal and rerailer on it. It also came with 4 9" straight pieces of track which I assume forms the "x" where the two circles come together with the over-under.