FarenhiteGR64

Heya. New BDA user here. Currently trying to change the ordnance on the twin-mount missile rail part from its default AIM-120 missiles, but no matter what I try, it just won't change. I placed the missile I want on the bottom attachment node as instructed, but it didn't work. I even used a single rail to see if that worked either, but no joy. Can anyone help me on this? Addendum (Sept. 27): I am also currently experimenting with the Deployable Missile Pod (Reloading) and the Ordinance Magazine parts, but the magazine isn't accepting any missiles that I have attached to it directly, and as a result, the deployable missile pod won't fire. What am I doing wrong?