Backyard gunsmiths changing numbers is humping.
Force Matching is what the Russians did with 91/30, SVT, and other Refurbs. Matching part was lost or no good so they electro penciled a different part and put it on.
The Russians did the same with RC Mausers. They stripped them down. Refinished them. Then to complete the destruction of a beautiful K98kthey grabbed the closest bolt or other part and re-numbered it usually with electro pencil rather than looking for the correct matching one.
The Finns since they took crap RussianMosins and made them shootable did an in between which we call Finn Matching. Russian Numbers were removed and new Finn numbers were added to the Russian parts that were reused.