What holds the step to the stringer? I’m kinda lost on why you can’t just measure from the end and front of the step to the stringer?
Would it be possible to cut a hole in the new carpet and just slide it over the brackets so you don’t have to remove them? Or is the old carpet under them? Even so still might be easier to cut the old around them? I’m sure I’m missing something here..
I think I would have cut around everything and left the steps in place…

or called in sick! lol
Working with the brackets in place would be a real pain, especially on the curved steps. It'll be a bit of a pain with that bracket sticking 3 in out on one corner. Besides there is a hole through the step so the bracket will go back where it came from after the carpet is put on them.
This new carpet and the pad are different thickness and I don't know how that's going to affect the bracket if at all. I removed a section of railing and once carpeted it still needs to line up with the curved railing which I'll remove next. If it drops right back in place and everything's peachy keen, then I'll know what to expect when I take off the difficult steps and that railing.
If it was just these four steps a couple of measurements would be all that was necessary to be sure the brackets go back where they started.
The angled steps are more of a concern. Practicing with the laser on the upper steps has taught me a lot about the positioning of the baulisters and also the position of how the railing mounts to the wall at the top of the stairs and to the curved railing.
Let's pretend I didn't measure anything.
Let's pretend the railing and balusters werent installed straight and pretty.
Now picturing me, and my self diagnosed OCD, trying to put everything back together straight and true when it's not supposed to be.
No, I just need to know things before I take these apart so I can be assured they're going to go back smoothly.
The straight stairs have a given me an education that may be useful, and maybe necessary on the curved steps. If something isn't lining up right and all the balusters don't go back in looking like they should, I wouldn't have any reference to anything.
The upper four stairs each had four humongous finish nails driven straight through the carpet, straight through the two by 12 and straight into the stringer....... Well, not perfectly straight because the front edge on one riser was split apart because of driving that nail in.
Instead of using nails, I found some Simpson brackets that I think will work good for holding down at least the front edge of the step. I'm thinking of putting these on the underside of the stringer and screwing straight up into the tread. To secure the back side of each tread, I can probably poke a hole through the carpet with an awl, and drive in one three and a quarter inch torx head screw. They make deck screws with smaller heads, but I only find them sold in boxes and they are a bit spendy.
I'll just paint these black or dark brown