Originally Posted by RutledgeQ
I don't know who is reading this anymore but I wanted to check a possible solution. What if I put silicone around the rim of the manifold and let it dry so that when I put it on it would create a sort of gasket. I also want to let it dry on the manifold in case it doesnt work, I can scrape it off. I don't want to have to scrape the grill as well.
My only concern would be the grilling heat, but it may not get too hot below the coals.
But the last thing I want to do is cap the current hole and drill another. I don't want to turn my grill into swiss cheese.
That will work if you use high heat silicone, you might also want to do a bead of silicone and then put a oven gasket on that bead but you don't have to the silicone will work fine.
High Temp silicone
Edit: for the hole you want to patch you can use a knockout they are found in the electrical section of the Home depot or lowes they look like this and come in different sizes