I'd suggest you also pose your question in the Swamp Rat forum. Swamp Rat used Res-C handles on their knives for a long time.
I'm not a member yet kept getting some kind of error when I tried to sign up so I have not tried for a while.
I will have to email them I guess and see if they can help.
Perhaps I will make it my first post on the Busse forum haven't they also been using it for awhile?
Bors