Hello, I finally started laying track. I'm laying track on plywood with cork bed under the tracks and just nailing the track down. Last year I put in a large yard. I noticed this year, that some of the track is out of line in the yard. I had one section I had to re-leave the pressure by cutting the two rails, then putting them back together. The thickness of the blade was about how much I need to get rid of. When I laid the track I only put a nail in every 4th hole on the Atlas track. My question is. Should I put nails in every hole on the track? My layout is in the basement. In the summer its cool, and in the winter it is warm. Would this be causing my problem? If any one could help me, that would be great. Thank you.