1. What is the "lead truck"? 2. Why is the "Sanding Lead Truck" button a toggle, but the "Sand" button a momentary pushbutton? 3. Can I run out of sand? If not, why not just leave it on every time (other than realism)? Does it slow me down? 4. In my current timetable scenario, I have the following: Two SD40's (3000 HP each) pulling 6700 tons east. Not a good HP/tonnage ratio. I get stuck at the 1.2% grade just before Sand Patch. No matter what I try. So.. I was thinking can I do this?: Unhook about half the cars.. go up the hill past Sand Patch or somewhere that the grade starts going down hill. Park, disconnect everything.. take my engines.. find a way to go back and get the first half of cars.. bring them up the hill then back over to where the other half of cars are ... lol... Well I think you know what I mean.. is this possible?