> Please let me know if you have any success and I'll do the same. Thanks.

In my haste, I had forgotten to actually change the SCSI id. *emberassment*

I have installed the CD burner internally and changed the SCSI id to 1, and
it's burning at full speed and using cdrecord's default timeout.

Woohoo!

Ben

ps.  Why does it fail at SCSI id 0?