Hi again everyone,
I know its late but I got news and I think maybe somebody will find it helpful.
As I said I bought a new copy. It arrived and the copy went smoothly, no errors. So the problem may be on the disc. Now, as I also said my fat PS2 could read it but ImgBurn did something weird and even disconnected from the drive when an error occurred with this disc. This is all info we already knew.
Now:
I notice this disc and another one that is also making trouble are kind of different. The discs seems fine. When read by IB I noticed that it displays different speeds. Usually for PS2 games is x4 but these one has x3. I tried to copy with x3 or max speed but the problems occurred. I tried another app (Alcohol) and I did have a copy but it didn't worked in the emulator. After more thinking and testing I've manage to get a functional copy.
What a did:
In IB, I put these settings:
Instead of x3, I used x5. I don't know why but the app ignore this slowest setting. If I use x3, it would start ripping at more speed (usually x6, x7, etc.) and I found that strange. When I used x5 this didn't happen. It stood always in a slow speed never faster than x5. I also checked "Ignore Read Error" and "Software Retries" to 1. After all this, I had a ISO with no errors or disconnections. The final ISO worked.
I know read speed should not matter but for these type of PS2 games it seems to affect.
Does this make sense to you guys?