In my case, there was almost as much thermal goop under the copper as above it. I twisted it a couple times and then pulled it off with my fingers. no issue there.... ya know except the mountain of goop.How did you get the copper heat pad off? I took off the screws and it still wouldn't budge from the case. I considered using something to pry it off but I didn't want to damage it.
I was literally asking my machinist buddies if they'd mill some cuts in the aluminum and copper block to add an 8mm heatpipe a week ago. lol.