As part of my rear disc brake conversion, I bought an external 2psi residual valve from Wilwood.  My plan was to remove the stock drum residual valve from the master cylinder and use the inline valve, but I just realized something: 1. My aftermarket disc/drum master cylinder has left and right outlets, two for the front line and two for the back.  I guess the idea was to give options for left or right brake line outlets if space was tight.  I have one port on each half of the MC plugged. If I'm