Any help with this will be appreciated, i'm a bit baffled! I've been looking through some of the tutorials on the BTB site, and i've extended the edges of my track with the surfaces tool, intending to have them grass/gravel. The tutorial shows that once on the materials radio button, points can be click&dragged to select an area of the cross section to change material. But when i try this, nothing happens. Theres no marquee box appearing, and the whole cross section stays selected. So, how can i grab just the outer points on one side of the track to change the material of it? Thanks for any help.