Well apparently using seiksui thermal tape to mount the stock backplate for the AM3 socket might not have been a good idea.. tried prying it off gently and it is not budging. (I taped it because I used extra long standoffs on the bench station because I knew one day I was going to need space for insulating)
Fortunately the mounting bolts are the same thread so will just require me to dig up some washers (hmm or maybe stock AMD plastic mounting bracket) to screw down from the top rather than the other way around
Going to have to do some extra insulating around the entire backplate now I guess...as long as it is airtight it should be good? (Very dry here, I am not even expecting as much frost as some of you guys post).