How can you edit the fire modes? I see the tab in the edit menu, but the "mode 1, mode 2, mode 3," are greyed out and I can not click on them. Does this just mean that I cant edit it for this specific gun? And sometimes the ammo is not properly edited, and I shoot the normal ammo instead of RPG rounds (for example). Is this also just a compatibility issue or am I doing something wrong? And is there a way to edit recoil/spray? Any help is greatly appreciated.