I have an over the stove Dometic Microwave that is practically brand new. When I hit a bump in the roadway, the grease filter and a 4"X4" metal plate fell onto the stove from under the microwave. You can clearly see where the grease filter goes but with this metal plate all attempts failed. Please help. I can't even find a photo of the underneath of the microwave. No other parts (i.e. screws, bolts, nuts, etc) are missing.