I have a Indesit D360F dishwasher. One of the three (middle one) switches is intermittently making contact. I need to either repair or replace it. How do I get the front brown cover off? I've removed 5 star screws from the plastic cover(3 on top and 1 each side of the door rim). Do I need to remove the program timer knob? Does the knob come off by pulling it away from the machine?