In Episode 7, we sit down with Justin Fiedler: rear tire changer on the No. 43 Chevy driven by Erik Jones, among other things. As someone with 15 years of experience on pit road, Justin has a wealth of knowledge and experience when it comes to shaving as much time off a stop as humanly possible.  In addition to his role on the 43 team, Justin also has a background in marketing, social media and web development.  All of these talents and interests combine for one of our most insightful and technical conversations to date.