Morning, I have Hotpoint WMD940G. At the back of the inlet valves there is a straight coupler that goes from the valves and into a bracket that holds the pump connection. This part has sheared off. I can connect the inlet pipe directly onto the valves. Is there a straight coupler that would do the job or do i need to purchase the whole dispense unit (as advised by Hotpoint). Cant see st. coupler on this part.