LGA775 hsf installation

i'd like to know other people's experience in installing the heatsinkfan for a lga775 socket. i recently bought a Q9450 quadcore and installed it. it took me a while to get the 4 pins locked in, and im not even sure if they are locked properly or whatever. I downloaded CPUID hwmonitor to check to see if there are any stuck sensors and checked out the temperatures while doing that. I ran a game and the temperature went up to ~75 on 2 of the cores and 66 on the other 2. arent those a little high? or are newer processors supposed to be that high?

while installing the hsf, when i click down one 1, the whole hsf tilts over to that pushed down pin, I tried getting in the diagonally opposite in, but that never works, so i did an adjacent. after taking the hsf on and off a few times and putting it back on, i eventually got them all on. when I try to wiggle it loose, it doesn't come off, but when i look at it, it looks like it could be a little off to one side, though im not sure, maybe my eyes were playing a trick on me. the mobo was already installed in the case so it was hard to see and i didn't want to take it back out. while pushing down the pins i also notice that the motherboard was kind of bending. i didn't expect to have to use so much force to put the hsf on...i just can't help but think i might have done something wrong