What are you all doing to combat track expansion as the seasons change? I layed On30 Micro engineering code 83 track back in the summer and now after the heat is on in the house I have three areas that have buckled. My sub road bed is spline with 1/2" homosote and then cork roadbed. The track was glued down with latex caulk. All rail joiners are sodered. How often should I have provided cut joints for expansion? I can see where it broke loose from the caulk that the ties have moved over an 1/8". I assume its the rail itself that is expanding????