Neeh, I wouldn't recommend all that.
Because doing that will not add anything to solve the "problem".
Cheking 1.62 firmware MID's posted by Liggy here we can clearly see OPTODISC-R16 is not supported by this firmware.
Thus drive will only burn at low speed using generic write strategy = bad burns.
shadowspirit, your firmware upgrade has nothing to do with it.
Try to find some "old fashion" 8x rated Verbatim, Taiyo Yuden or Maxell media and I can ensure you you'll have better luck hitting 8x speed.