The supply line to the water dispenser on my Model GLS25JFPCBS is cracked and needs to be replaced. Cant find video help for this model. On a similar model, you disconnect a bracket and just pull the tube out the top and then, push a new one in from the bottom of the door hinge. The GSL25JFPCBS has the white dispenser 'pipe nozzle'. I can find no way to remove the nozzle. I can see the tube inside the nozzle. So, I assumed that one would pull the tubing down through the door. No amount of pull force seems to budge the tube. What is the proper method for replacing this tube?