Backing up PS2 games a second time

[Aussie_guy]

I made a backup of one of my PS2 games a while back on some crappy media (Princo DVD-R A grade).

It turns out that the game I backed up is now unplayable for some reason (probably scratches or something). I only checked my back up copy recently due to the fact that the original is unuseable now. Well, the backuo copy is pretty crappy. It takes a while to load up and during gameplay it is jerky. And at one point it just freezes (about 5 mins into the game).

Now my question is can I make a backup of this game from the backed up copy somehow making it playable if I use good media such as Verbatim or TDK etc.?
I figure that the files are all there on the DVD, it's just that the media is crap so the PS2 has trouble reading from it. Thus if I burn it again on good media this will fix the problem.

But I also think that since it is already a crappy copy, I'll just be making an exact copy of a crappy copy which equates to another crappy copy.

What do you guys think? Burn again on good media?