There is good news and bad news,
the clamp for the brake will be the (J Section) (is what I call it), it's like a (T Section) with one extra foot, or a (I Section) with one less foot, the (J Section) will let us go past 90°, maybe 100° - 125° some were, So the clamp is good.
Now for the problem/bad news
the two Channels are not flat, the two faces when face to face (or at 180°) has a 7mm gap in the middle / center.
well since the didn't work. i'm thinking 7mm =0.27559" i'd give it a try. i think it will be ok. you might cut a small shim out of wood and fill the gap. i may affect the bend a little. but it's a smoker. not a watch.