Other side in
The other side of the liner is in. When gluing in place check the clearance of the handy track gauge (did you know why the shape is the way it is...this is to give tunnel clearances!). To hold this side into place while the glue was drying, I used T-pins.
Also you may notice I went a little larger than my clearance gauge. This is because I am on a curve, so I don't want my passenger cars to rub on the sides. I use 20" radius, so it's a bit tighter than other places.