Model #HDA3500N10CC, this unit started leaking quite a lot from underneath just after installation. After running a test cycle, there was no noticeable water from any of the visible connections, but once the drain portion of the cycle started, the leak presented itself nicely. The sump output on these units are made of a soft rubbery like material that is then clamped onto the rigid plastic drain hose outlet. The clamp connecting these two sections together on this particular unit were overly tight causing the soft sump material to deform and actually create an opening on the top and bottom of the connection. I reinstalled the two sections and applied enough pressure with the clamp to make a water tight connection and now this unit was ready for the dishes. This is a good example that over tightening a water connection is not going to make for a better connection.