chas0039, I would be ready to kill to have I scan like yours!!!!!
I have tried to burn with my Lite-On just to see If I have similar results and at 55% Drive began to be noisy (head problem I think) and my burn has failed, I have inspect the Media surface and I can see I very big scratch on it!!!! Perharps real problem is my fucking Lite-On 812s reader I'm using to test my discs... It will be easier if LG drive could be use to scan disk!!!.
Anyway I have buy a use Pioneer burner 10$ (104) on ebay yesterday evening to be able to do other test and I wish it will be able to scan drive to have another opinion...
Actually I'm really tired about this problem and I hope I will find the problem soon.
At last I have burned Verbatim DVD-RW with 4163b drive before the burn problem on my Lite-On it have scanned correctly without any spikes and fair quality score (77%).
At This moment I think problem could be TYG02 batch or Lite-ON problem to scan properly these Media. I cannot figure if my Lite-On drive could be defective also because the burn failure and I'm afraid to scan another Media...
Will also try to downgrade at 1.03 firmware with LG. I will be at bed very late tonight again!!!!