ncaa football 2004 & splinter cell dvd-r backup

[mrmo]

I backed up Ncaa Football 2004 & Splinter Cell to a DVD-R (Sony). I can't get them to boot, but when I swap them (r mod chip) after the original loads, they work. I don't want to use my originals at all to avoid wear. I have a flip lid, v4 ps2, cd loader (copy for swap), and gameshark 2. Any advise about booting methods anyone used to get these games to work would be helpful.