Insert the original AR-disc into your PS2 and extract the files through uLE and copy it to a USB-Stick, or through host directly to your PC.
Probably some of them are only dummy-files.
Create a new CD-Compilation.
Try to keep the exact LBA-Order.
I've done the same thing a few years ago, with MAX16 (Boot-CD).
PS2 V7/DMS3 V2 (FW:2.4b7); Seagate Baracuda 200GB
PS2 V7/CC1.0 (FW:34 hacked v2 BM:2.1.6); Maxtor DiamondMAX9 PLUS 160GB
PS2 SCPH-30004R; NoMod+NoLaser
3xSony MC 8MB
MAX/Datel 16MB with Boot-CD
Custom FMCB 1.8b+ Beta-Build, my AIO 0.5, Sony&xRhino-Linux