I would leave everything as is on the sheath if you're not going to use it. From this point on, use some Aussie Leather Conditioner to restore and protect the leather. The stuff is awesome. It's the last thing I apply on my belts before I ship them out. Apply it with your hands, let the conditioner penetrate the leather for a while, and then buff it lightly. It has beeswax in it which will protect it from moisture. Best $10 you'll spend.
On the other hand, if you still going to use the knife, send someone the sheath (the template) and have them reproduce a new one. I would be afraid that the leather would tear if you trying taking out the stitches and rivets out.
I just received my NEW belt from Zach, I have never owned a more quality hand made piece of leather in my 61 years!!!!!!! If you decide to rebuild, replace it , I can only recommend Zach!!! He does extreme quality work. THANKS Again Zach
