Realized that our drain trough assembly was very rusty. Tested water draining down by pouring a little water with a turkey blaster directly down funnel of drain and saw it was stopped up. (Probably by rust). Followed along with repair video step by step. Our refrigerator model was a little different from the one shown on video so it was a little harder to get drain pan assembly out as there is a narrow pipe in front of it, but with a little wiggling it came out. Saved a couple hundred dollars!