A computer system and method providing for viewing and switching of audio-video data. The introducer includes a sheath having a lumen, a side opening and a longitudinal slit and includes a cylindrical sleeve slideably disposed about the sheath. As a feature of the invention, the chute includes a primary section comprising a flexible outer layer, which universally connects to a wide variety of mower blade decks over the discharge exit port, and an initially planar, rigid inner layer affixed to the outer layer to provide structural reinforcement,.