Let me start with. Thank God to taking lots of pictures through out your build. I actually wish I took more as I was tearing apart my bronco. That being said i'm trying to put together my brake system and i have no idea how my brake vent axle combo all goes together. The picture is of my front axle. I have no idea what one of those tubes is? And why is it going into the frame??? Also what goes into that hole on my axle pumpkin? Should that hole be threaded? Mine is just a through hole into the pumpkin? Is the brake hose with the square end suppose to attach to the axle vent hole?