Hello Deus EX...
Try to install a new Aspi driver.It`s a long time ago since i had those Errors but i fixed it with installing a new Aspi Layer.
My Plex 24-10-40 grabs a complete Audio CD(74 Min.) in 2:30 Min.
complete on HDD without errors.
Also my Thoshiba 1502 grabs without Errors in around 8-9 Min. a complete CD.
My Plextor is installed in my PC as a Master on the Secondary IDE Port,Toshiba is also installed as Master on the first IDE Port.
HDDs working on a Standalone UDMA Dawi-Control 100 Controller.
Grab a new Aspi-Layer from Adaptec ,if you can
t find one ill send you some Url`s to download.
Bye,and good luck:)