i recently installed a fliptop on my brother's ps2(v5/v6). It has a strange problem, though. It reads original ps2 disks fine, but when it reads backup DVD's it makes a lot of loud noise, like the laser is struggling to read it. It won't read some backup games, yet it will read others. I know there is nothing wrong with the backups b/c I tried them on my ps2. The games he tried were DVD-R's, but the most recent game he backed up was on a DVD+R and it seemed to work fine. Could the problem be the type of dvd that he was using?