Hi, I bought an used sapphire Dual-X 280x recently and I want to repaste it. I unscrewed the four screws on the bottom but it wouldn't come off. I searched for a teardown on youtube and found nothing. Then I tried looking in the forums and found these two:https://forums.tomshardware.com/threads/how-do-i-replace-a-thermal-compound-on-dual-x-r9-280x.1722158/ and https://linustechtips.com/main/topic/233236-removing-r9-280x-heatsink/. I couldn't find anything useful in the "Tom's" forum post but the person who had issues in the ltt forum's got the gpu open with instructions from a link someone posted it the forum which doesn't work anymore (https://www.tomshardware.com/answers/id-2045376/replace-thermal-compound-dual-280x.html). Could someone please help me get this opened because I can't find a way myself.