K-ville -- did you buy your Vision Kamado at Canadian Tire? It didn't have a heat deflector? Did the box and paperwork not say it should come with a heat deflector? My Vision Pro came with a heat deflector lava stone, my problem with it is it's too small, the edges of what I'm smoking burn terribly (especially large pieces of meat) so I use an old cookie sheet to create a baffle, I just rest it on the thick rim of the fire bowl before I put down the first grill. Works beautifully, no burned edges on turkeys or pork legs/shoulders. The heat deflector mine came with is only 15", I want one at least 16" and would prefer 16.5" for the type of smoking I do.
Thank you for posting Vision's reply, that is very helpful information.