Thought I should make some ribs too.
Package just says Pork Ribs, but look like St. Louis.
Put them in the CampChef about 20 minutes ago at 275.
46 degrees outside.  Had to play around with the controller temp to get the ThermoWorks Smoke to stabilize at 275f.
Ended up setting to 220f to get 275f at the grate.
Don't have this issue in the summer.

Finished picture later...

That looks like a spare rib vs a STL rib

You're right.  It did say pork spareribs on the package.
Was not even thinking of "spareribs" as being a type of rib when I looked at the label.

 Does look good..

 You had me guessing: the title had me thinking.  The first thing that came to mind was, oh no - parboiled.

Here's the finished product.  Were nice and juicy.
No sauce, Have kinda gotten away from it.  Like them with just rub.

They do look good.  How long did they take 5-6 hours?

It was a little over 4 hours.
From about 8:45 to noonish.
Wrapped in foil when it was at 189 for last 45 minutes or so.
That took time.  Temp dropped back to 179 during the wrapping.
Another winter time issue.

Nice cook, I would eat them, I like a dry rubbed rib over a sauces one also, but he GF likes sauce on them so ours have sauce on them. I will get her at times, and while I am not a binder person never seen the need, I will rub them with some sriracha before the rub is put on.

You get winter in NM?

Yeah, I don't see the need for a "binder".  I soak up the liquid the ribs with paper towels before applying a rub and never have an issue with it falling off.  I also apply it in an aluminum pan and work the extra fall off back onto the meat.

Nice cook, I would eat them, I like a dry rubbed rib over a sauces one also, but he GF likes sauce on them so ours have sauce on them. I will get her at times, and while I am not a binder person never seen the need, I will rub them with some sriracha before the rub is put on.

You get winter in NM?

Mostly cold.  We had had snow overnight twice, but it melted off during the day.
 

This has nothing to do with the way they were prepped or cooked, but those are The strangest looking Spare ribs I have ever seen!

Have to agree with you on that.  Taste great though.
One more in the freezer.