Sony 710A (BYX5) + Verbatim DL Problems

Hey all, first post…
I recently flashed my Sony D22A to a Sony 710A @ BYX5 because I was noticing errors (blocky pixelation and slight sound skips) when backing up my newer movies (War of the Worlds and Mr. and Mrs. Smith). However the errors remain. There are only a few errors (I don’t ahve the scans on hand) but I would like to have perfect backups of my discs. I’m using good media and the original discs are flawless. Any ideas? New firmware? Disc strategy?
Thanks in advance, any advice helps.

Edit: here is the log at 4x
Date : 11/30/2005 12:36:58 AM
Model : 0-0-0-0 SONY DVD RW DRU-710A BYX5
Disc : DVD+R DL , MKM001 [Mitsubishi Chemical Corporation]
Speed : 4x
ECC blocks sum (PI/PIF) : 8/1
Scanned range : 0 - 3872222
Sampling count : 221486
Errors : 0
PI Max : 96
PI Average : 12.86
PI Total : 358408
PIF Max : 6
PIF Average : 0.16
PIF Total : 4427

and the pics: