can you copy xbox games?

[NamSey]

I'm having some problem in backing up my original games. Halo backed up no problem. But my other two games (Obi-Wan, Bruce Lee) has some minor defects. For Bruce Lee, the text are in blocks, all the text are in block shape. Everything else seems fine. The (3.7G) iso is made from XiSO. For Obi-Wan, it hanged on loading the level and no sound in the entire game (2.6G iso file). I made the iso from XiSO connected with WebDrive. Anyone having the same problems with these games? Or should I use wsFTP send it to my computer in binary mode and then use XiOS to make the ISO?

Sidenote: Bruce Lee, I used WebDrive and use Explorer to do a regular copy and paste to copy over to my hdd

Thanks all!