halo 3 and gears of war disks have a small crack in the middle of disk, any way to

[Mike Mitchell]

repair it/ get free replace my halo 3 and gears of war disks both have a small crack in the center, gears of war works fine most of the time but some of the online levels wont load and it says disk read error, but when i play halo3 the xbox is rediculously loud, i mean LOUD even louder than it usually is lol, i was wondering if theres a way i could fix it or maybe since microsoft published the games with they do anything about it

thanks