backup dvd wont work on my ps2 (messiah)

[dust2dust]

3 COPIES ON VERBS EVERYONE SHOULD HAVE WORKED
did u change anything to get fourth one to work

u say u got v5 so laser should b fine
u got cats,dogs,etc or just did building work
alot o problems arise from dirty lasers
buy cd/dvd cleaner(cd with tiny brushes on it )pop it in clean few times
ive had to do this when my ps2 plays up only loads certain games
then try all verb burns again even try unbranded again