Recently purchased this microwave to replace my 19 year old JE1590CC 001. Which is bult~in above our oven. Unfortunately nobody can fix it. And all our appliances are bisc color and apparently nobody sells a microwave that will fit in that color either. Very disappointed! So have disappointedly settled on this as a replacement. But need to know if we need a mounting kit to secure it in the cabinet, or if our existing hardware for the old one will work to mount this new microwave. If something new is needed can you please give me a part number. To be clear I mean mounting hardware not a trim kit.