Alright this is a dumb question but how the hell do you install the CPU? It drops in perfect no resistance then when I pull down the lever it only goes about halfway then stops like there's something stuck, It's in the right way but the lever won't go down. This is my first time so I don't know how much pressure to use, I don't want to break it off. And I don't think it makes any kind of difference but I'm installing a Tbird 1.2, 266.