Photos at the end of the post.
On an old house (new to me and my partner) there are ~2' eaves extending all around the house, supported by knee braces made of 6"x6" beams and a few 2"x4"s. Inspecting the house, it was noted that on one edge of the house a knee brace had fallen off (appears to be a while ago and painted over, and the fallen knee brace is stored in the house). An inspector saw that the roof was in good condition, but because of the missing knee brace, one part of the eave along the flat edge of the roof was a little higher (as if the roof was swollen), explained as a result of the adjacent eave sinking slightly where the knee brace was missing. They explained reinstalling a knee brace where one was, and potentially adding more braces, should stabilize the eave in that area.
For a variety of reasons behind us now this hasn't been fixed yet, and snow season is upon us in northeast USA. Is there a DIY solution or at least patch for this, to avoid further eave sinking and potential roof damage this season? Or going with a pro, what price range should we expect? Getting a few estimates is always a good call but we're not sure how many carpenters we'll get out here to check it out, to get a proper fix before heavy snow falls. It seems difficult to reinstall the old knee brace, because a) the spot to install it is 2 stories high; b) the knee brace is heavy enough where it requires two hands just to place it carefully; and c) it isn't (yet) known exactly where and how far behind the siding there's a beam to bolt the knee brace on to, though other knee braces around the house give clues.
Fallen brace. Paint isn't in good shape but the wood there is solid. The piece of wood separate from the knee brace was stored in the same place, painted same color, and has a tare (inch of wood mising) along the grain in the back.
North side of roof looking northeast, to show more of roof line which should be (and is mostly) flat. Where there is a slight swelling to the east, there had been water damage in the past, but it was inspected and is dry on the inside and reinforced with sistered joists in that area). Rest of the house seems nice and dry too.
Hard to notice any of the differences in the eave's height from the ground. As you can see from above there is some up-and-down a few inches around that area of the roof where the brace is missing.