I called my uncle who had done some appliance servicing. I needed to open the oven door part way and insert a pin into holes on each oven door hindge. Then I had to use a small putty knife and remove a clip on the oven side just where the door hindge goes into the oven. I lifted up and straight back and the oven door became detached . Was a simple matter of unscrewing the three silver screws at the bottom and the trim pieces were now free. The glass door front (bisque in colour) was removed and now access was clear to the oven glass inner and outter windows . I cleaned the outter glass with a moist cloth and reassembled the oven door. Re-installed then door back into the oven , removed each pin from the hindge. Lastly installed the clips back into the opening just awhere the door hindge goes in . :) :) :)