Adding ILS -Question-

When adding an ILS to a runway, will it work well if you use the coordinates of the runway touchdown zone BOTH for the glideslope and the localizer??I have observed that in most default ILS's, the localizer and the glideslope (even the DME sometimes) have different coordinate positions. I guess they better reflect reality, but is this mandatory for it to work properly in the simulator??ThanksJoaquin