I was prepared to do a lot of work to get it to burn right, but it just happened that this stuff that I had was perfect.  I couldn't ask for a better burn.  Flagman, if you send me your address in a pm I'll send you a piece and you can check it out.  I don't think all the extra soaking, washing, high grade P nitrate, etc, is necessary.  I think you just gotta find this rope. It's perfect.  I just stick it in overnight, leave it outside or on the radiator in the winter, and its done.  Never goes out, perfect pointed ember, burns really slow, no smoke.