someone told me i was not supposed to do private questions. I did not understand what that even meant and how i would do that. I just have more questions about my mark 4. Maybe you can point me in the right direction. I just ordered and received a new cd drive, bezel and button for my mark 4. I want to install but need someone to walk me through it. I have been told it is not too difficult and i am mechanically inclined when it comes to those things.