After I applied the thermal paste I locked the heatsink onto the cpu. However the pc is brand new and I had to do all the wiring, etc. so the heat sink got a fair bit of small movements from my hand hitting it when i was attaching cables around it on the motherboard. The heatsink was tightened to the back plate by the screws but it still seemed it was tilting a bit. Will that create air bubbles or some movement is ok? Do you guys think I should reapply the thermal paste?