Okay thank you Larry. I think you're probably right. I never even knew they existed. Two of my Genesis 1000s are natural gas and I don't have any plans for either one of them yet so that will work out.If you find any NG 1st generation Genesis you can simply unscrew 2 of the valves and use them. With such an unusual grill it will likely be hard to find directly
close enough:Is the BTU rating for each burner the same on x000 and juniors?
I've never even seen a Junior other than pics so obviously I don't know, yet I would think it is some percentage less since the burners are shorter.

They are going to get back to meCall Weber. You have a part # so give it a shot.
It'll be cool if they have one!They are going to get back to me