Hello, I have removed three screws, one on top, and two under cab, but shell is still firmly attached at the somekebox end. How is it still attached? I tried to check previous threads for this, and got 661 threads for Bachmann--then tried '2-6-6-2' and got nothing. I would ask at their Forum, but although I have registered twice and gotten two confirming emails, that after the FBI security background check, I would get the activation email---it hasn't happened.