replacing water tube assembly to water dispenser

Hi,

I have a leak in the water tube assembly. I got the part number to replace this from LG (5210ja3005f). I viewed the tutorial video for water tube assembly replacement from APP on youtube: http://www.youtube.com/watch?v=xZTJKnTsGfs. I was able to remove the cover plate and front panel of the water dispenser.

In the video, the "spout" where the water is delivered is part of the tube assembly, which can be pulled out and replaced. On my fridge, there is a gray spout, which I assume I have to keep, and I don’t know how to access the connection between this and the actual tube. I am attaching a picture of the dispenser assembly. I thought I had to remove the entire white assembly but it’s glued in the corners.

Thanks in advance for any help!