Lessons learned the hard way today. I put the tunnel liners in place, tested the fit by running the biggest engine, 2-8-0, through it and hot glued those suckers in place. Success. Or is that, SUCKS! I found out that what goes through forward may not go through backwrds. Turns out that al three of my tunnels will not accept the 2-8-0 in reverse. The cab of the engine has enough play, and the fit is so tight, that they will only go through forward; i either direction thankfully. So I just have to put an operational restriction on the layout that says; no backing through any tunnel. Go figure. I a\have some tight squeezes here.....that's what she said!
The Shocked Fadda