Here is a thought that might work... I guess you lose the gauges & aimpoint cause they are being hidden by the CS glass (used by 2D CS HUD ). Something similar that Dutch was reffering to at the post for another company's F-16.
Since there are 3 panels added by CS weapon (3D, 2D & glass) in panel.csweapon folder .xml & you don't need the 2D HUD for aiming, maybe you should try to delete the line reffering to  CS Glass and/or the 2D HUDalso... It may work, since another user told me that this way he fitted the HUD in a cockpits screen panel... Which by the way may serve as a good "MFD" type solution...