Laying track is quick and easy using Atlas's flex track. Be advised that, though the track flexes either way, the side with the ties cut every other one is intended for the inside of curves. Begin laying your track on a straight away. It is paramount that you join rail sections with the track straight, then bend and secure it to the road bed. This track has holes for nails every 9th tie. If you have a foam sub-base, I recommend using cork road bed also for sale on Hobbylinc.com. Tie nails will hold the track to the cork securely until the track is ballasted. When you come around full circle to meet the first piece laid, you must be on a straight away. Trying to join track on a curve will create unnecessary problems. Be sure to solder your joints on the outside only. Use Atlas rail joiners to ensure a proper fit.

is intact and usable but you need to try to pack loose track better

I like the code 80 as I find it easier to work with than code 55. It also holds it's ties better than the code 55. Once you ballast your track, the high profile of the rail isn't noticeable and I like the high profile as it makes it easier for me to re-rail cars. Other brands cant be straightened out again very easily like the Atlas flex track can.