I have seen several suggestions for fastening the track down. Screws, need to be counter sunk by hand and then you have the slotted heads to touch up. Flat head nails then heat the nail with a soldering iron to let them settle flush with the track. Then there is the question of how many nails/screws to use? Do I need to put two fasteners in each section of track? If I start on the front straight and fasten the first 15" section with two fasteners then go with one fastener at the end of the next section would the track stay pretty flat? Or do I need to do two fasteners per section? Have laid out the track and am waiting on some additional track to finish the inside two lanes, so I have time to think about this a while. Thanks for the help! Ralf 