My cpu is intel i5 4670k. The stock fan has 4 clamps which poke through the motherboard to lock it in place. Once I push them all through and twist them counter clockwise 90 degrees, one is poking through not quite as far as the other 3. I tried redoing it and pressing both perpendicular pairs down together to make them flush but no dice and I don't want to push too hard and break something. It is firmly in place and doesn't wiggle, but one clamp is still not poking through quite as far as the others. Did I miss a step or is that normal?