Just curious about a few details:
ASPI Version--see the sticky up top about this.
PxEngine (Primo issue)--there's some info about this floating on this forum. I'm at work, and I can't remember the Sonic link for the 06/03 release, but I've put it up a few times recently.
Burning Speeds--again, sticky up top about this (Test Utility for Pioneers, also the sticky about DVD-R Backup problem covers some details about bogus labeled media--you may not have gotten what you paid for).
Firmware version--again there is a sticky about this up top.
Just want to make sure you've covered all the usual pitfalls.
If it ain't broke don't try to fix it! But, hell if you can tweak that bastard just a little bit more....hehehe.