Hey Doug... thanks for looking that up. This is a double door right on the nose under the headlight. You open it up to show the volume potentiometer. It sure does look like it's lumped into the shell which looks like that'll cost $125. That's a non-starter for me. Now it does say that the shell is available from North Lima Trainworks so I'll call them to see if they can part with that one door - it's small, 3/8" by 3/4" at most. Now if that doesn't work I could get the one from the other AA unit and have someone (mold maker???) copy (mold, 3D print?) that. Anyone every do that?
