OK all. You guys have convinced me. White glue and a tight fit-up it is! 
On the plus side, the piece of walnut that Tom sent me is big enough to cut several strips of 'key stock' from that I can get different spacing and angles of the grain to choose from for the best match.
Larry, I like your tip about wetting the wood with denatured alcohol to check for a color mismatch too. I would have done that dry.
Thanks again gentlemen.
On the plus side, the piece of walnut that Tom sent me is big enough to cut several strips of 'key stock' from that I can get different spacing and angles of the grain to choose from for the best match.
Larry, I like your tip about wetting the wood with denatured alcohol to check for a color mismatch too. I would have done that dry.
Thanks again gentlemen.
Willie