I own a BFG FX5900NU and would like to remove the heatsink so I can use either the Zalman or Thermaltake heatpipe coolers. When I went to remove the stock heatsink I removed those little push pins and the heatsink would not come off. I believe there is some kind of thermal tape holding it on. How in the heck can I get that thing off of there??? There is no room to get a razor blade under there. Any suggestions are greatly appreciated.