Hi Kim,
I wonder if the spray arms have any obstructions in the holes/slots along their arms.
The end of the arms have a special hole to help spray the water out an an angle to make the arm rotate.
Also at the inside top middle of the machine is the upper white spray fitting.
You could unscrew this and check that the centre hole is free and the side jet holes are not clogged.
Does the dispenser lid open when required.
You could try using the machine with the filters out and see if this makes any difference.
When it runs does it seem to make the usual amount of splashing noise inside. You could also check if the water level is between the min and max settings as per the manual.
greg, November 2007