A fuel cap has a torque mechanism that transmits a rotational torque to a casing main body through engagement elements in response to rotation of a cover. Spaced apart snap together hinge assemblies and snap in place guide roller support brackets may be used to assemble the door by moving the panels into assembly with each other between the door guide tracks. A scent carrier may be applied to the retrieving dummy, to allow the retrieving dummy to emit such antler scent. The receiver may adapt the non-linear model based on values of an error signal generated from the reconstructed signal, and the values of the error signal may be generated from a portion of the generated estimates that may correspond to known symbols andor information symbols. The task-based compression algorithms use computer vision techniques to extract the bare minimum amount of information from the remote field scenery to allow the task to be performed. A plated layer is formed on the substrate having the structure formed thereon, and the filler and the structure are removed.