How 2 Get PSX BkUps to run on PS2--no mod?

[DJB14336]

Got a PS2, 3006 R with the extra screw in the expansion bay. Gameshark 2, v2 with extra PSX bonus CD and cart for running cheats. Use CloneCD (4.xx, always current) and use same settings used to successfully run PS2 CD Bakups with swap trick and GS2 CD (use creditcard to force tray-pin up and slide tray out). Almost got Legend of dragoon to work, but i think it had encryption protection (LybCrypt, maybe) because it gave me some weird screen with a big red circle with a line through it. Any other games just cause the system to lock up when i try to swap the disk. The system is still new, so I don't want to install a mod chip yet if not necessary.

Was curious if a CODEBREAKER CD would work, or maybe an older retail version of the PSX GameShark, maybe even the light version. Any ideas would be appreciated. Just for good measure, I have tried some patching bin files created from CDRWIN via PPF-O-Matic, tried converting sector sizes, ISO-9660 conversion, even the "AddZer0" method reccomended for earlier GameShark versions--no luck...maybe a combination...not sure what else to try?

Thanks in advance for your time!