I just rescued a SS Performer with gas assist from the weeds in back of my neighbor's house last night. I haven't had a chance to check it out too closely yet, but it looks to be in pretty decent shape but in need of some cleaning up. I forget the date code, but I think it is around a 2010 or so. Grates are rusty but after a thorough cleaning it should be good to use since it has always been covered. One thing that I noticed is missing is the propane bottle for the gas assist. Again, I haven't looked at it very closely at all yet but should it just take one of the green disposable Coleman camp bottles, or can it use a regular 20 lb propane bottle off a gas grill? Is there room to set a 20-lb bottle on the shelf or is it too tall? Like I said, I haven't had a chance to look at it closely at all yet. Thanks!