Sting7777,
I have a complete Lansky Diamond set (fine, medium, coarse, extra-coarse), but it's not new. It has been used, but all the original pieces to the kit are present (except that I can't find the instruction manual, but the kit is pretty easy to figure out anyway), and it's one of the newer ones that uses an allen screw to hold the rods into the plastic/nylon hone holders/handles.
Anyhow, I'd trade it for your BM 705 if you can't get a trade for a NIB Lansky Diamond kit.