Hi, first of all, I am facing a problem with my external burner that it takes a lot of time to read dvds. Also, it does not detect any of the supported dual layer discs. I decided to open up the burner in order to clean the lens. Well, one thing I learned is that the burner consists of two parts. An internal drive at front and a power + data unit at rear. Now, I have two questions. There is a silver tape wrapping both of the front and rear parts. Can I remove it? Also, can I replace the drive with another one of a different model? The input to the drive is: 5V /12V = 1.3A / 1.5A. Thanks for taking time to read this. Hoping to have a positive feedback on this. Regards.