Call Whirlpool about this. Stray microwaves are not a good thing. They should be able to tell you if it's wrong. Take a picture of it so you can have them see the gap.
Tony & Ruth........... FMCA#F416727
2016 London Aire 4519, Freightliner chassis, Cummins ISX, 2018 Jeep Wrangler Unlimited, Blue Ox Avail with AF1. TST 507 TPMS