I have the Asus M5A97 LE R2.0 mobo with the Zalman z11 plus case. I've been trying for almost 2 hours to install it but the standoffs doesn't match up with the holes on the motherboard. I installed the I/O aswell but i don't think the ports at the back is in all the way, but it won't let me push it in any further. the standoffs are kinda close to the holes but i can't push push it in anymore. Please help 🙁