Xigmatek s1283 install problem

I've had this cooler for several months. I tried several times to connect it to a generic ASUS board from HP, however the last time I tried I believe I may have used too much force and thought, at the time, that I cracked the MB. The exact problem seems to be that I can't get the pegs of the cooler to seat into the MB all the way; they won't snap into place. As stated above, I certainly used enough force to seat the S1283. I asked a pro and she said (Yes, you guys) that it might be possible to remove the screw inserts out of the MB that held the old fan assembly, giving me a bit more of a bore to fit the new insert screws. Barring that, I've checked into taking it to the local computer store where they said they'd charge me another $30 to get things right. Am I making sense?

Thanks. However I did try to snap the one I have and I fear that putting any more 'Thumbs' action will ruin the MB.

Thank you for the advice. I wrote to the company about possible answers and I'm still awaiting that reply. I did not know about the backplate and I'm ordering it now. Thanks again.