Hello, I have a ps2 v7 with a magic 3.1 installed. I paid a guy to do that had done over 60 of these installs. My originals boot fine. My dvd-r backups boot maybe 1 in 6 tries. This happens with all my disks. Sometimes it boots on the first try, sometimes on the 7th try. It seems pretty random. I have a toshiba sd-r5002 dvd burner and I use Princo dvd-r. What could be causing this? Thanks.