I have an ultraplex 40TS as a reader and a PX-820T as a writer.
When reading the original Blue shift with the ultraplex, there were a lot of read-errors, in the starting sectors 0,7,8,9 (!!!) : and a lot of others in the 5000-19000 area, which is NOT normal, as the Securom 2 protection is not based on a bad sector structure; it only has to do with sub-channel data.
Thus, after 9 non-recognisable copies (…), I figured that the ultraplex is NOT very good when it comes to reading hardcore subchannel data, as those into the securom 2 protection.
So my only option was to read it and write it with the 820T, which worked and produced so far, over 4 flawless copies!
I suggest you to read it and write it with your 12/4/32, because the odds are that it is more accurate than the ultraplex, concerning subchannel data.