I just built a P4 system with a Gigabyte 81EXP board and used the stock heatsink/fan.
It was difficult to lock the heatsink into place. It takes a lot of force to lock the cams. I made certain everything was seated properly, but after assembly the motherboard is bowed-out under the CPU due to the stress. I took the thermal pad off the heatsink and used a very small amount of Arctic Silver, but this didn't help.
Is this normal???
I'm worried that something will break with time/heat/stress.