I have a Swiss Vetterli 1878 that is in bad shape (rust and missing stock pieces) in addition someone cut on the barrel with a hacksaw. They didn't complete the job, just screwed up the barrel. The serial number is 188xxx and all the parts I have have matching numbers. I'm thinking any collector value it may have had has long since went out the window so I'm considering cutting and recrowning the barrel to kind of make it a carbine. In addition I'll convert it to center fire. I guess the question is, What should I be on the lookout for?