can anyone tell me how to install this door glass? it is not the interior glass nor is it the exterior glass it is a middle glass that needs replacing. I have ordered and recieved the glass but for the life of me cant figure out how to install it . may have to remove the door but it isnt one os those you just pull the door and it slides off hinges and their is a thin metal frame that is one continuous rectangle so i can remove top and side screws but no room to remove bottom screws as that is the bottom of door and no tool ive got is small enough to fit between oven and door bottom (about the width of a pencil) not sure removing that frame is even what i need to do to get to this glass. any advice appreciated.