OK, Got a nice little vac pump. I see how to make a fitting for a bag, can figure out the bag. I have made a shaped buck for the cold form ply, made a backing board with channels and have some mesh for airflow. What I need is to connect the pump to the bag. I have some old sturdy air line that should hold up to a vacuum. What I don't have is any clue what the fitting on the pump is. Are they standard? It has two, one large, one small. I did not buy a complete HVAC manifold set.