Thanks for the suggestions. I was surprised that this wash aid was so little known but it's a European product and may have no distributor on t'other side of Atlantic.
Any hows. I have been tried variations on my process and with different wash cycles I have got a decentish print of an FB paper much quicker than my previous process (longer and longer soaks in fresh water worked for me) . Still not happy with Se tones but that's something else to work on. What I like about this hobby is trying new stuff, I'll probably not use a wash aid once this bottle's gone but I've tried it :-)