Hi,
I corrected the track fitment. there is only one slight mis-align remaining. Changed the figure 8 slightly. This is in the fitment SCARM file. The changed tracks are in default clear.
The second SCARM file assumes using the Lionel trestles at 5.75". The climb from the switch is about 3.9%. That's acceptable. I also did some 3D.
The layout fits as you designed it if the roadbed is almost touching the left side. The star point is 1.5"X, 32.5"Y and Angle 270ยบ
Files attached.