Well I got my Optiarc AD-5280S installed, but it looks like doesn't seem to support overburn. The model number on the drive label states -CB, but ImgBurn shows just AD-5280S 1.Z8.
ImgBurn 2.5.0.0
UPDATE: Tried ImgBurn 2.5.8.0 - Same results. Sending BurnerMAX Payload reports unsupported drive (which I shouldn't need to do anyway). Can't find a Force HT setting in 2.5.8.0. I suspect it is a media issue, but I got a couple DVD's from a buddy who is using them with success on an iHas drive. So maybe that's not the case.
If there was only a way to somehow copy an ISO file to my XBOX. Every time I buy a new game, I create an ISO of the disc in case I scratch, break, or lose the original. So I have ISO files of all my games, but to reinstall them back on my XBOX, I have to burn them then use FSD to copy them to the hard drive. Seems like a pointless endeavor.