Hi all, I've been offered to buy a rotisserie brand new for $65 but it's made for a Spirit and Genesis. Has anyone done a mod to be able to use this on either a 22 or 18" Kettle before? I was thinking I could get a friend to make me a ring to use if needed but since I've never seen a rotisserie like this up close I can't picture how or if such a mod is possible.