Has anyone on the forum used one of these;
http://www.ebay.co.uk/itm/331411572429?_trksid=p2060353.m1438.l2649&ssPageName=STRK:MEBIDX:IT

Have now answered my own question ! The pump on this item has only one outlet and the stilo needs two (of course, for back and front screens). The unit on sale was actually listed as suitable but unfortunately is not. My stilo now has a restored unit from a local breaker. Ebay supplier refunded without any quibble.