I've had to HOLD DOWN my Mac Pro WITH ONE KNEE whilst trying to lift out the fan assembly. Where the frig could it be jammed??? I've removed the screw at the top of the assembly. The assembly pops out of the connector on the motherboard and the top of the assembly is loose, but holy shit is it ever holding on at the bottom. These things weigh what... 13Kg? I would easily have been putting three times that force on trying to lift out the assembly. Kinda glad it didn't pop loose (or break) or I'd have thrown myself out the window... Any tips?? Driving me absolutely insane as I've been at it for over half an hour... Just want to swap out my CPUs!!