Give the spray arm a spin to make sure it rotates. It should spin freely. If not, remove plastic spray arm clip, flip it over, replace it, and try again. Make sure holes in the spray arm are clear of debris. Spray arm must be clean for it to spin. If spray arm does spin freely, remove spray arm clip, spray arm and the post assy (the thing the spray arm attaches to). Try your WikiFix again. This time add baking soda to the hole the post assy came from. Top it off with white vinegar. Leave it overnight. In the morning, stick your finger down the hole where the spray arm assy sat. You should feel a plastic thing. This is a propeller attached to the recirculation pump. You need to free it up. Get that thing moving with your pinky or a chopstick or whatever. Try the machine without the spray arm. You should get water blasting up from the hole. Reassemble the spray arm.