A mat gasket for use with a tapping saddle is disposed about an aperture in a main fluid conduit and is further disposed between and in sealed contact with the main fluid conduit and an outer sleeve member. Preferred embodiments of the car include a car carriage for motion along the surface-dimensional track in accordance with a two-dimensional velocity vector. The fastening clip may also include stabilizing flaps on either side. The distributor unit is operable to rotatably couple with the control unit, receive the power signal from the control unit, identify power transitions within the power signal, and generate a plurality of output signals corresponding to the identified power transitions. Then wood is leaned against the outer rim of the metal ring. The doors are pivoted between a closed position during normal combine operation and an open position to permit cleanout of crop material.