I experience difficulties when removing the HS when the sink base isnt evenly lapped or the CPU surface has a sink in the center , i mean its like a suction between the HS and CPU IHS . Even the with the HS heated up , i still cant remove the way its suppose to be removed , sometimes i pull the HS out with the CPU stickin with the socket locked .
Plus my CPU IHS center isnt flat , there is a sink in the center as the edges always scratch my HSF surface .