Mulitple monitor problems

Hi All,

I apologize if this has been asked and ansewered. But!!----I have been building a big, nice complex flight sim setup with wall mounted monitors and the whole Go Flight/Saitek flight instruments--the whole bit--cool--but I can not move my PMDG secondary screens around to different monitors like I can with generic FSX aircraft---I get black screens and sysetm crashes when I try this---can anyone add information or thoughts or help with this issue

 Cheers and thanks

Dorn