Would you mind using the Flash Utility (http://codeguys.rpc1.org/utilities.html) to dump a copy of your firmware. I haven't seen any firmware for this DS8A4L model and it would be nice to have a firmware dump available for it in case someone needs it.
You can also use the EEPROM Utility to backup your EEPROM as well.
You can upload the files somewhere to a free host and post the link(s) in here.
As far as I know there aren't any firmwares available for the DS8A4LH model (which presumably is the Lightscribe enabled version of the DS8A4SH) which you could try.
There are some firmwares available for the DS8A4SH which might be newer than yours (but we won't know that until we know the date of your firmware), and crossflashing to the DS8A4SH is quite likely possible (but you will lose the Lightscribe feature if you do so). Having said that, even if you do that it will not help you with MCSE editing, because MCSE does not support any of these firmwares (the media codes are not displayed properly which is an obvious indication that the firmwares are not supported)...
Since it doesn't support the DS8A4SH firmwares, MCSE won't support your current firmware either (once you dump it from your drive), so you won't be able to edit your own DS8A4LH firmware either...
Maybe try better quality media, or media which can be burned at 2.4x?
Needless to say, make sure you keep your EEPROM and firmware dumps safely if you're planning to modify the drive in any way.