If I know if is going to be a lot of dripping like for pork butts i put something like a stainless serving tray or a cookie sheet under the foil, just to be safe, you don't want to accidentally dump a bunch of drippings into your KK.
I believe it was just older models that used two gaskets. If you have your serial number maybe Dennis can identify the correct gasket for your KK. You might want to give him a call before ordering.
I was extremely happy to see that email !!!! I got one of their last boxes of Post Oak but missed out on Peach. Those are the only two i use, well occasionally some grape vine but I get that free from a friend.