But why did you buy it when nobody here recommends it? I don't recommend 4161 because it's NOT LG's own model and not quite as much supported by LG itself and not as good as 4163 or even 4160. Complain to the person who recommended it to you or the one who sold it to you.
If I import drives from NEC or Lite-On or BenQ and distribute them in certain markets, it becomes my own responsibility to make sure the users are reasonably satisfied. Only on that condition, the drive maker decides to sell the products to OEM buyers. (That was why I spent my own money to replace some returned units of NEC drives instead of telling the users to talk to NEC.)
Ask BenQ if BenQ wants to be responsible for Plextor PX-740A which is designed and made by BenQ. Ask Lite-On if Lite-On is responsible for 4KUS-branded Lite-On SOHW-1673S. Yes, it's perfectly the same drive as real Lite-On SOHW-1673S but no part of Lite-On or any Lite-On distributor is responsible for it.
Before buying anything, make sure who is responsible for the after-sales service and at what cost.