if you just want good functioning handles that are comfortable and don't come loose,i have the answer for you.i was down at the classic talking with Kerry and making some bows.he pulled out his draw knife and started working on a stave.the handles looked a bit odd.when i asked about them he said that he got tired of the handles coming loose and fixed them.he put rubber fuel line hose over the metal posts then dipped them in a can of plasti-dip.plasti-dip is a dip for tool handles.you can get it at the big hardware stores.Kerry sells alot of osage staves.he debarks alot of osage.he said he has never had a set come loose.i don't know if you want to restore them to original,but this is a good way to fix a knife.hope this helps.