Hey Ian, so neither manifold set up leaked. We tore the first one off so we could start from the head and work our way out. Used a block off plate for the EGR port on the manifold. Will keep that on there until I come up with a solution. Working through two manifold setups we tested everything as we worked our way from the head out to a completely functioning smogged setup. Once all vac sources were 100% in place the truck would fall on its face. Then in each scenario we only blocked off the EGR and it purrs.