That much space means that your heatsink was improperly installed.
Suggestions for applying thermal compound:http://benchmarkreviews.com/index.php?option=com_content&task=view&id=170&Itemid=1&limit=1&limitstart=0
have fried your CPU.
Yes. Figured it out and fixed it out, too. I noticed also that the motherboard was warped because I had trouble installing the backplate. I also had trouble fixing the backplate, so I had to ask my brother for help! It's alright now and has made a pretty high improvement over the last temp (especially when the system starts).
Previously, when the computer has started, the temp went up to 50-65C and now, it's 35-40C. WOW! But, R.I.P. the 4th core. LOL
Thanks for the manual, xD.