Have you tried just setting up on a single board-A new route, without any assets already in place? Trying things on a route already built is fine but usually has a lot of distractions. There are the "rollable" ( Yes rollable is part of the name-by author paulzmay ) stoppers on the DLS that work besides those ATLS ones, just make sure with those the checkerboard pattern faces towards the track. Put down section of track and stoppers to each side. This is the best time to add your "invisible" road to stoppers and crossing gates, slave, especially when your having issues when first learning. Connect end of road between each stopper. Now the IMPORTANT part when you add road to other side of stopper make sure it connects to stopper and not road!!! To check lift each stopper into the air so you can see road on both sides is lifting with stopper. Many times when you add the opposite side of road it will look like it "snapped" to stopper when in fact it went to spline point of road? As far as a video never done it before, heck I'm out breath typing this much!
Dean