I purchased a left and a right turnout in the Fast track product. The left works great however the right Derails my trains when it is trying to turn. Any suggestions? Thanks

What does one do if there are pieces missing for the Plasticville kits? I'm new to Model Railroading and until I get better with handcrafting buildings I'm using Plasticville Kits. Can someone tell me where to go? or whom to speak with?