I think that the reason you are not seeing the WXR gauge itslf, but still see the radar screen, has something to do with the settings in [Views] (after the [Window Titiles] in the panel.cfg), yet the [Default View] setting (at the bottom the panel.cfg) is fine at:

X=0
Y=0
SIZE_X=8191
SIZE_Y=3200

with 8191x3200 being the size of the screen, which I think is quite good.


From the FSX SDK:

[views]
This section enables the default views to be changed.

[default view]
This section sets the overall default view for the default 3-D window.