I have a 4 year old GE Profile side by side refrigerator with an indoor water and ice dispenser. My problem is that the water dispenser volume is so slow that it takes over a minute to fill a 16 oz glass. When ithe dispenser is first activated I get a good stream with plenty of volume but it disipates within a second and then reverts to the low volume flow. I have changed the filter but the problem still persists. Any suggestions would be appreciated