gotcha999, looking at your 12x scan above and 16x scan in your first post, in my opinion, you got a mixed YUDEN000T02 quality.
The 16x scan shows that the drive doesn't have any problem burning the disk until 4GB mark where it produce slightly high PIEs. The PIFs (and all parameters) are still within standard btw, just like others mentioned.
In the 12x scan, it looks like high spikes were produced where PoweRec kicked in, not sure. Did you disable PoweRec?
I would like to see one more scan burn @12x to compare with the above, with PoweRec and AutoStrategy ON . If you get a better scan, it looks like your YUDEN000T02 varies in quality. Otherwise it might be your drive, but I really doubt since you can produce good burn @16x in the first post.