According to Amber Yu at ILY Enterprise, manufacturers of Spartan DVD, Blu-ray and CD duplicator towers, high failure rates usually have to do with the condition of the master disc.This could be the issue even if you can play and read the master disc, because disc players only spin at 1X speed. During the burn process, the reader has to spin the disc at a much higher rate in order to match the duplicating speed. At high speeds the quality of the disc is magnified, making it essential to have a high quality master. So, your first step should be to remake your master.