Hi , i have an sli set-up on my Asus pro Z87 mb, the top 2 slots work fine , but the 3rd slot does not recognise my gpu. I wanted to move the bottom card down a slot to get some air between the cards. I took the bottom card out and placed it in the 3rd slot , I then re-installed the gpu but in the nvidia control panel it does not show up as configured. Any help would be great thanks.