Greetings. New to model-trains, but I've done a lot of model work on various wargames in the past and love making terrain. I'm building a board in N Gauge using Plywood as a base with sheets of pink insulation board on top of that, so I can carve in rivers, valleys, etc. However my question is this - since the railtrack will be on this pink insulation board, I see no way I can tack the track to the board. What should I do? Should I glue the track on instead? Help!