I have a question about the Scaling/Measuring on this Challenge. OK I used the '1 Grid space = 1 foot' to make sure everything is scaled right, but there's many instances where I want to turn the Grid 'off' - or measure a models 'height' and so I cannot see the Grid. I started using the CREATE>Measure Tools>Distance tool, but soon realized it was working on a different range.... How do I set this? It would be a BIG help... Regards Scraggy