Hey experts, I am wondering if any of you who have some GrillGrates know if the two radius cut sections of the 22" custom set fit on an 18" kettle? I have read some of your comments on if they're good or not so good. I feel like I want to try them but I am a cheap sob, so I'd probly want them to be versatile to my situations. I have also read that if you use the standard ones or ones that dont fit your kettle perfectly that they are hard to clean, and the 18" set doesnt look like it fits straight out of the box, but it does look like the two radius cut pieces will fit the SJ. Any help from your experience with them would be appreciated. Theyre running a 15% sale right now it seems. Thanks.