I got a new motherboard for my mother's computer after her previous one died. I have a brand new Asus P7H55-M Pro motherboard and transferred the i3 530 CPU and stock Intel heatsink fan. But, I just cannot get one of the pushpins to click into the motherboard. One other pushpin gave me a really hard time as well, but I managed to get it in. This last one is just plain stuck and I can't get it in or out. Any advice? I never anticipated having this much trouble with pushpins...