It has been quite some time since I have posted to the forums here. Other pursuits have occupied my time for quite awhile. However, I stumbled into this thread thinking, "EECH... I haven't played that in ages, I wonder how it is fairing."
I am normally not one to get in the middle of Internet altercations or misunderstandings. However, I do believe that in his original post XIII was attempting to help, and I would be remiss if I did not try to assist the original poster as well.
Try ctr f1 or alt f1 ~5 times
It has been several years since I last used this software and readily admit I may be mistaken, but if memory serves correctly either ALT + F1 or Ctrl + F1 is the shortcut key used in EECH to resize the HUD / IHADSS independent of screen resolution. Pressing that key combination several times should cycle through several different HUD sizes, if it has survived the significant code changes.
Great work with the sim, by the way, the modders have achieved some remarkable steps forward from what I am reading.
Carry on.