Tell him to burn at 6x or 4x to see how it turns out. If that doesn't work then he should try with Verbatim or Taiyo Yuden blanks.
It worked! And he thanks you very much! He'd never burned a disc on his new computer, so he was kind of freaking out.
I usually use Verbatim myself and they've been good to me, but not as good as Maxell. Fuji, on the other hand, I bought two spindles and 1/2 of them were scratched all to hell. It was a joke, but luckily I got them mega cheap.