I am dissambling my ps2 to put in the DMS 4 EZI Pro modchip I got yesterday. I have tooken it all apart except for the fact that the silver base at the bottom. There are like 9 different tiny screws holding it. So far I got all of them except 4 and they are were under the power supply. I have broke my only precision screwedriver on these 4 trying to get them out. Is there a special tool to use to get these suckers out because it feels like they are welded in there.