NTSC PSX Backups on PS2

[Geforce]

PS1 Originals Struggle to load sometimes
PS1 UK Backups Load OK
PS2 Originals Work Fine
Cant` try PS2 Backups Got no AR2
UK DVDS WORK OK..

NEO MOD 2.2 Fitted

Never had a problem with the backups before, Used to have PSX and all my Backups worked fine.. I`ve Even used the patch it program on My ISS Pro Evoloution 2 US Backup and it still wont boot.. Thought the patch it program had trashed the Image so tried the backup on a ps1 It booted first time no probs.. Can`t figure out whats happening with this game..

Used Patch it on JAp ARKANOID and it boots first time on MY ps2 but not iss pro evo 2... God Knows why..

Using CDRWIN 4
Yamaha 28-4-4 CDRW
On Mirror 80 min Cd`s