That's a common result when scanning T02 media with a 411/811 drive.
That "mountain" at the begining is typical for most of these drives.
I propose that if you scan the same discs on another drive you will find that the results are acceptable.
I went through 3/4 of a 50PK Fuji DVD+R spindle, 1/2 of a Sony 50PK DVD+R spindle (both YUDEN000T02), 1/3 of a 25PK Maxell DVD+R spindle, a NEC ND-3500A and finally a SOHW-1633S which indicated that all previous burns were fine (contrary to the indication of the 811S scans).
My experience with the EEPROM Utility Tool, both drives that I tried it on displayed servo errors immediately after using the tool and will no longer complete a KProbe scan.