I don't know if this will help. I don't use publisher. I just produce a 4 page leaflet in A4 in MS Word and then in my printer properties I choose Page set up A4, Booklet Printing, Printer paper size A4 and it automatically selects double sided printing. This will produce an A4 (one fold) leaflet. I am using a canon Pixma IP4300 which does double sided printing. I know this does not answer specifically your question but it may be an alternate solution.