I need to uninstall the above dishwasher that is about 25 years old. I unscrewed the clips attaching unit to countertop. I unscrewed the bottom face plate of dishwasher. I turned off the water supply and electric. I disconnected the waterline from the unit. I still cannot pull out the dishwasher from the space under the countertop. It will not budge. What do I need to do to to remove this dishhwasher? Your help would be appreciated. [email protected]