The ice dispenser funnel (the part you push your glass against to dispense ice and water) broke on my freezer door. I have the replacement part but am having difficulty getting to the assembly portion. Do I go through the inside of the freezer door or do I have to take off the whole assembly on the outside of the door. The assembly on the outside of the door seems to be snapped into position and would likely break if I try to pry it off. can this be approached from the inside and if so how?