Looks like I spoke to soon in regards to the Plextor 716 and our CD-DVD Speed.
I'm now in Germany and our Engineers reported they could not duplicate this issue with the Plextor 716A and the 1.04 firmware. So I grabbed the drive and tested by self, and all is working. And yet the drive I have in our US office that I upgraded the firmware to 1.04 did show this issue.
Now we'll have to wait till I return to the US on March 20th to try and get to the bottom of this issue. I'm going to ask my contact at Plextor US to send me a couple more of these drives. One with the 1.04 firmware already flashed, and one that needs to be flashed.
Sorry for the delay.