OK.. I purchased the BBQ Sensor Grommets from Cajun Bandit, but they didn't come with any instructions. I'd like to make sure I get these things in there correctly, because I don't want to run into an issue later with meat on the rack. I am struggling with figuring out how to make it work. I took the bolt out of the top "grate holder" but can't figure out how it's supposed to work. Any help is appreciated. Thanks!