Product review (4 stars): Must still completely defrost fridge for this fix to work.
Easy to install once the fridge is pulled away from the wall.  However, you still need to completely defrost the freezer compartment or the fridge will still lead from ice build up.  I defrosted the glacier in the bottom, but did not take out the shelved and door to get to the back of the freezer where ice also builds up.  I will either have to wait longer before restarting the freezer or take off the door and shelves and manually defrost it to solve the problem I guess.  Many people pointed out that you could just cut the top off of the rubbler nipple it replaces, but I think that solution may only be temporary until it gums up again, and you still have to pull out the fridge and take the back off.