A Brazilian 'Little Nappy' slow cook on the UDS

It's a public holiday here in Brazil today, so I thought I would get the drum going, and try a slow cooked beef Fraldinha. The sun is shining, and it's going to be a hot one.

A Brazilian cut called Fraldinha (little nappy) with my choice of rub. Mustard powder, some hot smoked paprika, some flaked garlic and onions, sea salt flakes - mixed together with some water to make a paste.
1.

It's a fairly cheap cut in Brazil, but has a good fat cap, and suits slow cooking nicely. 1.26kg and R$33 (about US$14).
2.

Here it is with the fat showing - this should render down nicely.
3.

The rub is on.
4.

The drum is up to heat - my UDS runs pretty hot, so a crusing temperature is about 280 F.
5.

Onto the UDS with the meat probe in.
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Time to sit back and enjoy the sunshine
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With one or two of these..

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Will update the photos later with how it looks. Anyone any thoughts on a good internal temperature for when to pull this?

Cheers from Brazil, and thanks for looking!

I've pulled it off and left it to sit - internal temps were quite high at 170 as I wanted this moist but not pink. The internal temp when it went in was near to 100 to start with!

Will see how it carves in about 20 mins.

Thanks for looking and the comments!

Obrigado!

Well - that wasn't good. The flavour was nice, but it is still tough as an old boot. I am putting it back on to break down some of the internal fat and fibre, having wrapped it in foil, and will see how it is in a few more hours.

I've not tried this cut before on the UDS, and it seems it wants to be cooked like a rack of beef ribs - slow, slow and low.