Hi burning a 2hr 20mins DVD in S11U and the settings are Automatic 144mins at 2508kbits PCM audio. Now in studio 9+ I was able to burn a 2hr 46mins DVD in Custom  at 3240kbits PCM audio . Why the difference I would have thought the shorter  2 Hr 20 DVD would would have had a better kbit rate than the longer DVD ? . Could someone please explain Thanks