I read your burn in post, and it appears that yours was fairly normal, and you did everything exactly right. After you do your patches, and one or two more hi heart cooks, it sounds like you'll be done with that part. There are folks on this forum that didn't even realize that tiles were lifted on their grills for several cooks, the tiles were in the back of the grill. Once spotted, he punctured the grout, the gas escaped, the tiles laid down and now there's no evidence of tile issues at all.
If you have any questions, doubts, or concerns, ask away, we're all here to help, but always, feel free to call Dennis, he'll answer any questions you may have.
Rob