Problem #1: Dishwasher leaves 1.5 inches of water in the bottom when finished. I removed drain hose from disposal and placed it in a bucket. I advanced the dial and watched. It would drain but always leaves the 1.5 inches in the bottom. It appears pump is working fine; it just won’t empty the unit. Problem #2 (maybe): With the drain hose in the bucket and turning unit on, water constantly drains until all is gone but the 1.5 inches. Seems like it should retain more water during wash cycle? Every time I hear water entering, it’s draining also. Maybe this is normal? Any help or advice is greatly appreciated.