IO Shield Help?

Hi guys,

I'm currently trying to install my Asus Z87-K mobo into my Corsair 200R Case. The problem is I can't seem to get the motherboard ports to sit properly against the IO Shield, as the shield has these tab type things that just want to push the board away. Anyone out there know how to deal with this?

you need to hold the board on an angle, matchup with the io shield first, then slowly lay the board down.