im having problems with my slim ps2. i recently bought. its my first playstation. its a version 70006 and its modded with an infinity 1.38 (thats what it shows when the playstation 2 screen comes up). The problem is that im having a hard time loading games since all the games i have are copies. the red please insert screen usually come up for all 25 games ive bought. so i return the unit to the store with all the games i bought and what do you know!?!? all the games work suddenly... why is this? so i return to my home knowing that the unit is not defective but then i still have problems loading up the game but i can play games sometimes most of the times the please insert ps2 cd comes up.. they say that the unit is sensitive and loading it should be done properly.. is this true? and if it is how do i put the dvd on the playstation? is it a sign of a bigger problem?