Problem with a Skies of Arcadia disc

[Ginza]

Hi! Bought Skies of Arcadia via ebay - both discs are in good condition (disc 1 has a number of fine lines on it in various places, but no deep scratches or anything like that).

try and load the game from disc one - the disc spins for a bit, then stops and the dreamcast just goes back to the main menu.

try disc 2, it works fine (but then it asks for me to put in disc 1 - at which point, it *sounds* like its going to load the game, but then the screen goes black and doesn't come back on till i open the tray, at which point it goes back to the main menu again).

suggestions? i know DC discs can be a bit twitchy with regards marks on them, but i have a space channel 5 disc that looks like a dog ate it and it works fine.

here however, i have a (pretty good condition) disc that refuses to boot.

all my other games work fine.

/ edit - forgot to mention, sounds a bit like this guys problem:

http://www.digitpress.com/forum/showthread.php?t=106858

notice he mentions skies of arcadia too. hmmm....coincidence?

[Ginza]

update - took the disc into Game as a last resort and got them to put it in their disc fixing machine. When i got it back, the disc was flawless EXCEPT for this one fine line from the center to the outer edge of the disc. still didn't work

its pretty annoying if it won't work because of the one scratch. bah.